152 articles trouvés pour ce sujet.
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Calculer la hauteur de chute de cette pierre |
2000-12-16 |
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Marcus pose la question :
Une pierre tombe au fond d'un puit, à 5 secondes on entend un son (de la pierre). Calculer la hauteur de chute de cette pierre en tenant compte de la vitesse du son = 340m.s-1 Il faut savoir que pour la chute libre v= g.t ; h = 1/2 g.t2 ; v = 2g.h g intensité du champs de pesanteur = 10 ; h hauteur de chute.
Claude tardif lui répond. |
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The height of a right triangle |
2021-12-15 |
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Slash pose la question :
hi how can i find the height of a triangle from the hypotenuse and base. please
go into some details with some steps because it is hard to understand. thanks
Penny Nom lui répond. |
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The height of a cone |
2021-05-13 |
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Carmen pose la question :
If a cone has a slant height of 25 inches and a radius of 7 inches what is the
height in inches of the cone?
Harley Weston lui répond. |
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The height of a tree |
2020-09-27 |
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Kerissa pose la question :
A man height 1.2 m standing on top of a building 34.6m high views a tree some distance away he observes that the angle of depression of the base of the tree is 35 and the angle of depression of the top of the tree is 29, assuming that the tree stands of level ground. Determine the height of the tree.
Penny Nom lui répond. |
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The height of an isosceles triangle |
2020-02-23 |
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Reagan pose la question :
I need to find the height of an isosceles triangle with a base of 6 and sides of 4 units. How do I find it?
Penny Nom lui répond. |
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Sipping juice from a Tetra Pak |
2020-02-11 |
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Anjhelic pose la question :
Karen is sipping juice from a 1 in. by 3 in. by 6 in tetra pack at the rate of 0.5in³/sec. How fast is the height of juice in the pack decreasing?
Harley Weston lui répond. |
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The average height of a wall |
2019-08-15 |
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Jeff pose la question :
Trying to figure the average height of a sloped foundation wall.
The lowest point is 24 inches or 2 feet.
The highest point is 116 inches or 9’ 8 inches.
Can this be figured without the degree of slope or can we assume it is
Equaled sloped from point a to point b. Thanks
Penny Nom lui répond. |
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The height of a building |
2019-04-05 |
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Hayley pose la question :
A young man is 36 meters away from a building and looking at a bird sitting on top of the building. The man knows he is 85 meters away from the bird. How tall is the building?
Penny Nom lui répond. |
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The height of a tower |
2018-12-12 |
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Pandey pose la question :
Hello sir plz solve this question. If the shadow of a tower is found to be 10.5m longer when the sun's altitude is 45°AND60°. Find the height of the tower.
Penny Nom lui répond. |
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The area, radius and slant height of a cone |
2018-05-18 |
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joette pose la question :
If you have a cone how to find the slant height when given the area and radius?
Penny Nom lui répond. |
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A cone formed from a circular sector |
2018-04-18 |
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Jessica pose la question :
A circle has a radius of 7.5cm. A sector with an angle of 240 degrees is cut out from the sector. If the sector is folded to form a cone. Find the length of the cone.
Penny Nom lui répond. |
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A penny is thrown from the top of a building |
2018-03-16 |
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Zoraida pose la question :
A penny is thrown from the top of a 26.7-meter building and hits the ground 3.39 seconds after it was thrown. The penny reached its maximum height above the ground 0.89 seconds after it was thrown.
a. Define a quadratic function, h, that expresses the height of the penny above the ground (measured in meters) as a function of the number of seconds elapsed since the penny was thrown, t.
b. What is the maximum height of the penny above the ground?
Penny Nom lui répond. |
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The height of a isosceles trapezoid |
2017-04-03 |
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Riham pose la question :
Hi
How can I find the height in an isosceles trapezoid if I have the measurements of all of its sides ?
Thank u in advance.
Penny Nom lui répond. |
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The lateral side length of a cone |
2016-06-05 |
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Diane pose la question :
Question is find the lateral side length of a right cone with area of 372 sq. cm and base circle radius of 9 cm.
Penny Nom lui répond. |
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Heights at various points along an arc |
2016-04-15 |
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Isiah pose la question :
So I am working on a problem with a few friends; you have an arc with the center of its chord at 0,0. We also have a known sagitta and a known radius of curvature.
How do we calculate the height extending in both the positive and negative directions?
Central sag: 2.48
Chord length: 9.6
Penny Nom lui répond. |
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A word problem |
2016-03-10 |
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Sam pose la question :
Jo is 10 cm taller than Ruth. Pam is 16cm taller than Ruth .Rod is 8cm taller than Pam.
How much taller than Jo is Rod?
Penny Nom lui répond. |
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The height of a triangle |
2016-02-03 |
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Brooklyn pose la question :
How do I figure out the height of a triangle when it only tells me the base of he triangle? And vice versa.
Penny Nom lui répond. |
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The height of a parabolic arc |
2015-12-30 |
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Tom pose la question :
Is there an algebraic means to determine the highest point of a parabolic arc if the base and perimeter are known?
Penny Nom lui répond. |
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The height of a truncated cone |
2015-12-04 |
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Jack pose la question :
I need to build a truncated cone that has a top of30 inches and a base of 64 inches . The sides need to be at a 64.5 degree angle. This will determine the height. Can this be calculated?
Penny Nom lui répond. |
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The height of an equilateral triangle |
2015-03-12 |
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anna pose la question :
I am anna and i am in 7th grade.
i am trying to find the height of and equilateral triangle, all sides equaling 4 inches
Penny Nom lui répond. |
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The height of a building |
2015-02-18 |
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prateek pose la question :
the height of a flagpole on top of a building is 6m.
the angle of elevation of the top and bottom of the flagpole are 45 and 30 respectively.
find the height of the building
Penny Nom lui répond. |
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The height of an obelisk |
2015-01-27 |
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Fabian pose la question :
Two observers on level ground position themselves 50 meters apart so that an obelisk is due north of position A and due west of position B. The angle of elevation to the top of the obelisk at position A and B is measured to be 29.9 degrees and 37.5 degrees respectively. Use this information to estimate the height of the obelisk.
Penny Nom lui répond. |
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An antenna is atop a building |
2014-07-05 |
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Andrew pose la question :
If an antenna is atop a building 70 feet tall and the antenna has a beamwidth of 30 degrees how far from the building does the beam first touch the ground?
Penny Nom lui répond. |
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The height of a building |
2014-05-17 |
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Jim pose la question :
If I'm 150 ft. from the base of a building and the top of the building is approx. at a 75 degree angle, how do you calculate the height?
Penny Nom lui répond. |
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Maximize the volume of a cone |
2013-10-09 |
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Conlan pose la question :
Hi I am dong calculus at school and I'm stumped by this question:
A cone has a slant length of 30cm. Calculate the height, h, of the cone
if the volume is to be a maximum.
If anyone can help me it would be greatly appreciated.
thanks.
Penny Nom lui répond. |
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Using trig to find the height of a hill |
2013-08-14 |
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Anna pose la question :
From the top of a hill, the angles of depression of two successive milestones on a level road, which leads straight away from the hill, are 5degrees and 15degrees respectively. Fine the height of the hill.
Suggestion: BE is drawn perpendicular to AD. Find BE, then BD, finally CD.
Thanks :)
Penny Nom lui répond. |
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An isosceles tiangle |
2013-06-16 |
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Izzy pose la question :
what's the height of an isosceles triangle which has a base of 50 m, and both of the other sides are 25 m?
Penny Nom lui répond. |
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Find the height of the tower |
2013-04-28 |
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nombulelo pose la question :
the shadow of a tower,when the angle of elevation of the sun is 30 degrees is found to be 40 meters longer than when it is 45 degrees. Find the height of the tower
Penny Nom lui répond. |
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The height of an aerial |
2013-02-12 |
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ASIT pose la question :
A vertical aerial stands on a horizontal ground. A surveyor positioned due east of the aerial measures the elevation of the Top as 48 degree. He moves due south 30metre and measure the elevation as 44 degree. determine the height of the aerial
Penny Nom lui répond. |
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The height of a sheet metal cone |
2013-02-09 |
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Charles pose la question :
Sheet metal cone.
I need a cone with a finished base of 38.19719 diameter
The cone is to be from a 48 diameter round with the wedge cut out.
The best calculation I have is the arc is 286.479. (correct?)
Could you verify this arc angle but more so what is the cone height?
Harley Weston lui répond. |
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The angles of elevation and depression |
2012-12-03 |
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Chelsey pose la question :
a person on a balcony of one building looks towards a second building. if the angle of elevation to the top of the second building is 25 degrees, the angle of depression to the bottom of the second building is 17 degrees, and the balcony of the first building is 22 feet above the ground, what is the height of the second building?
Penny Nom lui répond. |
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The height of a triangle |
2012-10-17 |
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Brian pose la question :
the base of my triangle is 12 metres and the two sides are 8.45 metres
can you help me find the height of the triangle
Penny Nom lui répond. |
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The hypotenuse |
2012-09-06 |
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Jeevan pose la question :
how can i find the height and base of a right angle triangle if i have the hypotenuse only ?
Penny Nom lui répond. |
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The length and depth of a chord |
2012-08-16 |
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Tim pose la question :
Can I find the radius of a circle, if I have a chord of 2400mm, and a depth
between the center of the chord and the perimeter of the circle of 150mm ?
Thanks
Tim
Penny Nom lui répond. |
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The height of an isosceles triangle |
2012-07-10 |
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ken pose la question :
I am trying to determine the various heights of an isosceles triangle, if each has the same base dimension and varies in the degree of the base (equal) angles. What is the method to do this?
As an example, of the base is 10, and the two equal angles are each 45 degrees, what is the height? With the same base (10), but with the two equal angles at 60 degrees, what is the height? And with the same base (10) and the two equal angles at 75 degrees, what would be the height?
I know how to calculate the degrees of the third angle (add the degrees of the known angles, and subtract from 180); but am unsure if that is needed for figuring the overall height.
And to be clear; I am not looking for the length of the sides of the triangle, but the height from the base to the top point.
Thank you!
Chris Fisher lui répond. |
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The height of a cylindrical container |
2012-04-10 |
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Rodney pose la question :
a cylindrical container has a radius of 6cm. the container is holding 255 cm3 of water. rounded to the nearest quarter inch, what is the minimum height of the container?
Penny Nom lui répond. |
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The height of an equilateral triangle |
2012-02-29 |
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Carley pose la question :
Hi my name is Carley. I am an 8th garder. What us the height of an equilateral triangle si the sides are 18 cm?
Penny Nom lui répond. |
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Margie threw a ball |
2012-02-16 |
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mary pose la question :
at 9:45 Margie threw a ball upwards while standing on a platform 35ft above the ground. The height after t seconds follows the equation:
h(t)= -0.6t^2 +72t+35
a) what will be the maximum height of the ball?
b)how long will it take the ball reach its maximum height??
Harley Weston lui répond. |
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What is the height of the triangle? |
2012-01-12 |
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Hailey pose la question :
The area of a triangle is 77ft2. if the base is 11ft. how tall is the height?
Penny Nom lui répond. |
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The height of a tower |
2012-01-06 |
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trevor pose la question :
A tower is on the top of a hill. It is 2,400 feet from an observer to a point directly under the tower and at the same elevation as the observer. The angle of elevation from the observer to the base of the tower is 15 degrees and to the top of the tower 23 degrees. How tall is the tower in feet? Compute your answer within one foot.
Penny Nom lui répond. |
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The height of a flagpole |
2011-12-07 |
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Grail pose la question :
at a certain point the angle of elevation of the top of a flagpole which stands on a level ground is 35 degree. 75 ft. nearer the pole, the angle of elevation is 50 degree. How high is the pole
Penny Nom lui répond. |
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The arc of a bridge |
2011-12-05 |
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Marioneta pose la question :
Two same columns placed symmetrically, 40 m apart.
The height of columns is 8 m.
If the origin of the coordinate system is placed at the foot
of the left column the equation of the arc of the bridge:
f (x) =-1/80x^2+1/2x+8
What is the maximum height of a boat sailing under the bridge and
identify its path.
Penny Nom lui répond. |
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What is the altitude of the balloon? |
2011-12-04 |
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C pose la question :
Chelcy and Jorgeare 2.32 miles apart. The observe a hot air balloon directly overhead between them Chelcy's angle of elevation is 28 degrees. Jorge's Angle of elevation is 37 degrees. What is the altitude of the balloon?
Penny Nom lui répond. |
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The height of a fluid in a horizontal tank |
2011-07-24 |
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jason pose la question :
Same set up as many others, cylindrical tank on its side, but I am interested in defining the change in volume and/or fluid level as a function of time at a constant volumetric outflow. I plan on hooking a pump to the tank so "gpms' will be constant. I have a couple different sized tanks and pumps so I want a general equation. Thanks for your help.
Harley Weston lui répond. |
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A cylinder fits perfectly in a box |
2011-07-18 |
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Brix pose la question :
A cylinder fits perfectly in a box. 76 cubic inches of oil is poured into the space between the cylinder and the box, filling the space halfway. If the box is 3ft wide, how tall is the cylinder in inches?
Stephen La Rocque lui répond. |
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What is the height of the building? |
2011-02-05 |
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Myra pose la question :
The angle of elevation is 45 degrees. The distance from George's foot to the top of the building is 50m. What is the height of the building?
Penny Nom lui répond. |
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Calibrating a conical tank |
2011-02-05 |
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Bill pose la question :
Hi, I have a round tank with tapered sides where I know the diameter at the top and bottom. Is there a formula I can use to calculate the volume by measuring from the bottom up the side (at the angle of the side) to any given point? Thanks, Bill
Stephen La Rocque and Penny Nom lui répond. |
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The height of a lamp |
2011-01-13 |
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Dorothy pose la question :
I need to find the lamp height with casting shadow (base line of triangle where a boy 1.6m tall stands 3m from base of street lamp and has a 2m shadow. In other words, think of a right angle triangle with zero height starting at left, then 2m to right stands boy (1.6m high). Angle (hypotenuse) increases up to top of street lamp with 'x' height and 3m base.
Penny Nom lui répond. |
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The height of an iceberg |
2010-12-16 |
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Sharon pose la question :
if an iceberg can be seen 10% or 70 meters above the water, what is the measurement in meters of the iceberg below the surface of the water?
Robert Dawson and Penny Nom lui répond. |
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The height of the trapezoid |
2010-12-01 |
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Ryan pose la question :
A trapezoid has an area of 10.5 cm squared and parallel sides that
measure 5.0 cm and 2.0 cm what is the height of the trapezoid
Penny Nom lui répond. |
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The area of an equilateral triangle |
2010-11-11 |
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ginny pose la question :
If a equilateral triangle has side lengths of 41.33m how would i calculate the area?
if i don't know the height of the triangle?
thank you.
Penny Nom lui répond. |
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Measuring the heights of tall objects |
2010-10-28 |
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Inder pose la question :
what is used in real world to measure heights of tall objects? besides Clinometer or shadows, what else is their that is used to measure tall objects.
Robert Dawson lui répond. |
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The height of a triangle |
2010-08-05 |
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Ann pose la question :
The height of a triangle is 4cm less than the base. The area is 198cm^2. Find the height.
Stephen La Rocque lui répond. |
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The shadow of a building |
2010-07-28 |
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vera pose la question :
building casts a shadow 210 ft. long,40 degree angle.How tall is the building?
Penny Nom lui répond. |
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The height of a triangle |
2010-06-21 |
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Taylor pose la question :
how do i find the height of a triangle with a base of 3 and a side of 5 the book says 4 but i cant get that
Penny Nom lui répond. |
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The capilano suspension bridge |
2010-06-03 |
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nida pose la question :
the capilano suspension bridge in north vancouver is the world's highest footbridge of its kind. the bridge is 140m long . from the ends of the bridge the angles of depression of a point on the river under the bridge are 41 degrees and 48 degrees. how high is the bridge above the river to the nearest metre
Penny Nom lui répond. |
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The altitude of a triangle |
2010-05-08 |
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kylie pose la question :
the vertex angle of an isosceles triangle is 57 degrees 24 minutes and each of its equal sides is 375.5 feet long. find the altitude of the triangle
Penny Nom lui répond. |
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The height of a hill |
2010-03-26 |
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Amber pose la question :
A surveying team determines the height of a hill by placing a 12-foot pole at the top
of the hill and measuring the angles of elevation to the bottom and to the top of the pole.
They find the angels of elevation. Describe how to find the height of the hill.
Penny Nom lui répond. |
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What is the height of this box? |
2010-02-19 |
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Carol pose la question :
A rectangular box with a volume 0.75 cubic meters, Length 1.5 meters and width 0.4 meters. What is the height of this box.
Tyler Wood lui répond. |
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The height of a roof |
2010-01-31 |
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carl pose la question :
Width of my roof I am building is 5M at baseline, and the pitch is 40%.
What will the height be, and how can I work this out in the future.
Penny Nom lui répond. |
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The height of a mountain |
2010-01-02 |
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Aye pose la question :
In order to decide the height of a remote mountain peak T one measures from two points A and B the angles u and v where the lines AT and BT made with the Horizontal plane respectively. From B, which lies 2400 m from A, one can see A and T by the same point of the compass. Find the height of a mountain peak, if A and B are known to be 950 m and 875 m above sea level respectively, as well as u = 43,8 degree and v = 25,2 degree.
Aye
Harley Weston lui répond. |
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Triangles on a base of 2.4 meters |
2009-12-26 |
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Allan pose la question :
Please,How do I calculate the height of a triangle when I only know the width of the base line,It is 2.4 mtrs.
Thankyou very much.
Penny Nom lui répond. |
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A ball is thrown upwards |
2009-12-17 |
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Reuben pose la question :
A ball is h meters above the ground t seconds after it is thrown where
h(t) = 40t – 5t ^2 . Find the time at which the ball first reaches a height of
(a) 10 meters
(b) 40 meters
(c) 100 meters
Harley Weston lui répond. |
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The volume of a cone |
2009-05-20 |
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Lillian pose la question :
okay! so my math question is about the volume of a cone! my work sheet gave me the volume and base of the cone and asked me for the height! please help me discover the height of a cone when the volume is 78.54 cm (cubed obviously) and the base is 6 centimeters. thanks so much :)
Penny Nom lui répond. |
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The shadow of a tree |
2009-04-20 |
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Lindsey pose la question :
James found that a 30 ft. tree that cast a shadow of 40 ft. A wire from the top of the tree to the beginning of its shadow must be how long?
Penny Nom lui répond. |
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The height of a right triangle |
2009-04-17 |
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drakkar pose la question :
how do i find the height of a right triangle that in 176 feet in area
Penny Nom lui répond. |
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Depth to height ratio |
2009-03-26 |
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Janet pose la question :
Is there a formula to determine how deep something (a cabinet) should be based on how tall it is?
Robert Dawson lui répond. |
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The base and height of an isosceles triangle |
2009-03-23 |
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Chris pose la question :
How do you find the base and height of an isosceles triangle that has 2cm legs?
Harley Weston lui répond. |
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The height of a triangle |
2009-03-20 |
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jon pose la question :
hi,
my daughter has to find the height of a triangle her side are 174ft and
184ft and the area is11,500 ft squared.
thanks for the help
jon
Penny Nom lui répond. |
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The height of a right triangle |
2009-03-08 |
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Anah pose la question :
Could you please tell me the formula for me to calculate the height of a triangle. I have the angles and side lengths. I am trying to calculate the height of an right triangle, the dimensions are as follows:
The Base/Hypotenuse is: 8x
Side A is 2x.
Side B is 2x.
Harley Weston lui répond. |
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The height of a triangle |
2009-02-14 |
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GARIMA pose la question :
IF THE SIDES OF TRIANGLE ARE GIVEN . HOW WE WILL
CALCULATE THE HEIGHT OF TRIANGLE.
Penny Nom lui répond. |
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The height of a triangle |
2009-02-06 |
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lisa pose la question :
find the height of a triangle, which can be split into two right triangles, but the base (4') is not split equally in half. No interior angles are given.
side a=3', side b=5'
Penny Nom lui répond. |
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The height of a triangle |
2009-02-05 |
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Theresa pose la question :
Find the area of a triangle by first finding the height. base30ft hypotenuse50ft
Penny Nom lui répond. |
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The height of an isosceles triangle |
2009-01-29 |
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Mariah pose la question :
An isosceles triangle has sides 10cm, 10 cm and the base 4cm.
How do you find out the height of the triangle?
Penny Nom lui répond. |
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The height of a triangle |
2009-01-20 |
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ELEY pose la question :
WHAT IS THE HEIGHT OF A TRIANGLE IF THE AREA IS 32.4 AND A BASE OF 6.75?
Robert Dawson and Penny Nom lui répond. |
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A triangle with sides of length 6 and 7 |
2009-01-20 |
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bill pose la question :
If I have a triangle with sides 6 and 7,
which of the following is a possible area?
The answers are 13 and 21, but not 24.
I know this is because of a possible range of heights,
but how do I calculate the range of heights?
This is an SAT question. Thanks
Chris Fisher lui répond. |
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An equilateral triangle |
2008-12-17 |
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lorraine pose la question :
an equilateral triangle has side lenghts of10.the length of its altitude is?
Penny lui répond. |
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The volume of a cone |
2008-12-03 |
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Tamriko pose la question :
Hi! Help me, please to solve the following problem: The diameter of an ice-cream cone is 6 cm and the slant height is 10 cm. What volume of ice-cream would fit inside the cone? Thanks!
Penny lui répond. |
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The height, base and perimeter of a triangle |
2008-11-17 |
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Zack pose la question :
How would i calculate the height of a triangle if the base is 10cm and the area is 50cm²?
If possible how would i calculate the length around the the triangle.
Penny Nom lui répond. |
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The height of an equilateral triangle |
2008-11-06 |
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touqeer pose la question :
My question is that how can we find the height of an equilateral triangle without using pythagoras theorem?
Penny Nom lui répond. |
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The height of a right triangle |
2008-10-06 |
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David pose la question :
Could you please tell me the height of a right angle triangle when the base measurement is 4930mm and the base/hypotenuse angle is 10 degrees.
this will help a lot.
Harley Weston lui répond. |
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The height and base of a triangle |
2008-09-12 |
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Bailey pose la question :
The length of the base of a triangle is 1cm less than 5 times the height of the triangle. The area of the triangle is 21 square cm. What is the the height of the triangle and the length of the base of the triangle?
Stephen La Rocque lui répond. |
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The average height of an attic |
2008-09-12 |
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oliver pose la question :
I need to find out the average height of a specific volume/area.
a standard house shape side walls height 10m, height in centre of house 15m.
width 15m length 25m (the roof spans the width)
Within the house in the corner there is a (box shape) room which is 5m in height by 3m wide and 4 m long
How do i work out the average height of the space directly above the room (same floor area)?
Stephen La Rocque and Harley Weston lui répond. |
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The height of a tree |
2008-09-09 |
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danice pose la question :
At a certain time of day, the angle of elevation of the sun is 30°. A tree has a shadow that is 25 feet long. Find the height of the tree to the nearest foot.
Penny Nom lui répond. |
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Subdividing a chord |
2008-08-18 |
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austin pose la question :
Here is my question. Imagine I have a circle of known radius 25 feet, and a
chord with a mid point height of 6 inches from a central point on the chord
to the circumference of the circle. I wish to divide this chord into a
number of equal divisions. How can I calculate the measurement of the
perpendicular line at each division of the chord to the circumference and at
a 90 degrees at each division
Penny Nom lui répond. |
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The base of a triangle |
2008-08-10 |
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Mark pose la question :
What is the formula I need to use to find the base of a triangle sail that is 16 feet high and has an area of 64 square feet.
Stephen La Rocque and Penny Nom lui répond. |
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Some angles in a pyramid |
2008-08-04 |
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Carla pose la question :
A symmetrical pyramid stands on a square base of side 8cm. The slant height of
the pyramidis 20cm. Find the angle between the slant edge and the base, and the angle between
a slant face and the base.
Penny Nom lui répond. |
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The height of a triangle |
2008-07-18 |
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Becc pose la question :
I have to find the height of a triangle.
The base is 3.1cm say ab
One of the top sides is 4cm say ca
The other side is 2cmsay cb
Penny Nom lui répond. |
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The height of an isosceles triangle |
2008-06-22 |
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Evelyn pose la question :
Hi! I am facing problem finding the height of the isosceles triangle.
Penny Nom lui répond. |
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The rate of change in the depth of the water |
2008-06-12 |
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Liz pose la question :
A rectangular pool 50ft long and 30ft. wide has a depth of 8 ft. for the first 20 ft. for its length and a depth of 3 ft. on the last 20ft. of its length and tapers linearly for the 10 ft in the middle of its length. the pool is being filled with water at the rate of 3ftcubed/ min
at what rate is the depth of the water in the pool increasing after 15 hours?
Harley Weston lui répond. |
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The path of a baseball |
2008-06-04 |
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Tom pose la question :
How high would a batter have to hit a ball to clear the stadium roof in right field
if the distance to the right field fence is 320 feet from home plate? Is this solvable?
Janice Cotcher lui répond. |
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The height of a triangle |
2008-04-17 |
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Trent pose la question :
I need to know the area of a triangle. One side is 5 the base is 12 and the angle between them is 52 degrees. No height is specified. How do I find the height to get the area?
Penny Nom lui répond. |
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How tall is the tower? |
2008-03-13 |
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chris pose la question :
you are standing 120 feet from the base of a tower. the angle of the elevation to the top of the tower is 15 degrees. how tall is the actual tower?
Penny Nom lui répond. |
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How tall is the pole? |
2008-02-06 |
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GENEVAMILTON pose la question :
A WIRE THAT IS 6 FEET LONG IS ATTACHED TO A THE TOP OF A POLE THE WIRE IS ANCHORED IN THE GROUND AT 4 FEET FROM THE BASE OF THE POLE HOW TALL IS THE POLE?
Stephen La Rocque lui répond. |
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The dimensions of a rectangle |
2007-12-22 |
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Justin pose la question :
I'm trying to find the width of a rectangle. I have its area and its height. The area is 32 inches square and the width is 4 feet (48 inches). Can someone help explain this to me?
Penny Nom lui répond. |
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The height and area of a triangle |
2007-11-05 |
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Daniella pose la question :
I need the exact formulas to find the height, the area,the lenght of triangles...
Penny Nom lui répond. |
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The height of a triangle |
2007-11-03 |
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William pose la question :
I need to find the height of a triangle if the base is 15, one side is 14 and the other side is 13.
Stephen La Rocque and Penny Nom lui répond. |
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The base and height of a triangle triangle |
2007-10-31 |
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mike pose la question :
How do you find the length of the base or the height of a triangle if the area is 30 square feet?
Penny Nom lui répond. |
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Constantly accelerated motion |
2007-10-29 |
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Priyanka pose la question :
A, B and C are three points lying in that order on a straight line. A body is
projected from B towards A with speed 3 m/s. The body experiences an
acceleration of 1 m/s^2 towards C. If BC =20 m, find the time taken to reach C and
the distance travelled by the body from the moment of projection until it reaches C.
Stephen La Rocque lui répond. |
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The height of an isoceles triangle |
2007-10-29 |
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Maura pose la question :
I am trying to calculate the height of an isoceles triangle but in this case AB is not equal to AC.
How do I calculate this?
Thank you,
Maura age 13
Stephen La Rocque lui répond. |
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Arc length and height in a circle |
2007-10-23 |
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Bruce pose la question :
I have been trying to find a formula that relates height of a segment
from the bottommost point of a circle toward the center of the circle to
the corresponding distance along the circumference of the circle
(i.e. at the point on the circumference intersected by a line perpendicular
to that segment). The unknown variable is the height of the segment;
the known variables are the radius of the circle and the distance
along the circumference.
Stephen La Rocque lui répond. |
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The ratio of arm span to height |
2007-09-17 |
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Chandler pose la question :
I am doing ratios and I was wondering if... well let me explain first. I have data on the arm span and heights of 10 students including myself now i have my measurements of me are 66inches arm span. and 66 inches height. my second piece of data is 71 inches arm span and 67 inches height now my ratio is 71:67 right? i thought i would need to simplify. but i cant really simplify this ratio and these numbers. what do I do?
Stephen La Rocque lui répond. |
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The height of a pole |
2007-08-02 |
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lalaine pose la question :
Hi, this is my problem..
From a point 50.2 m to the pole, a student measured the angle of elevation to the top of the pole to be 32°. Find the height of the pole if the student's height from his feet to his eyes is about 4 ft.
Penny Nom lui répond. |
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The height of a triangle |
2007-07-17 |
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linda pose la question :
IF AREA EQUALS 12radical 30 of the triangle find the height B= 3 radical 3
Penny Nom lui répond. |
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Altitudes of scalene triangles |
2007-05-17 |
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Chris pose la question :
Two of the altitudes of a scalene triangle ABC have length 4 and 12.
If the length of the third altitude is also an integer, what is the biggest
that it can be?
J. Chris Fisher lui répond. |
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The radius of a cone |
2007-05-07 |
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Braden pose la question :
i need to find the surface area but i only have the slant height and the height i need the radius how do i find it?
Penny Nom lui répond. |
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The height of a triangle |
2007-05-02 |
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Cassie pose la question :
If you have a scalene triangle with sides measuring 8 units, 6 units, and
10 units (and 10 is the base) how do i find the height perpendicular to the
base of 10?
Penny Nom lui répond. |
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A piece of paper is cut in half |
2007-04-12 |
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Jana pose la question :
A piece of paper is cut in half and one piece is placed on top of the other. Then the two pieces are cut in half and one half is placed on top of the other, forming a stack of four pieces. If this process is carried out a total of 25 times and the original piece of paper is .003 inches thick, what is the height of the stack to the nearest foot.
b. Using the same problem setup: Suppose now that our paper is big enough to fold 50 times. Again the question is “What is the height of the stack of paper,” but this time, “to the nearest mile.”
Stephen La Rocque lui répond. |
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When will the rocket hit the ground? |
2007-04-05 |
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Megan pose la question :
A model rocket is launched at an upward velocity of 460feet per second off a platform that is 40 feet up from the ground. Use the formula h(t)= -16+vo+ho where vo is the initial velocity an ho is the initial height.
A.) Find the maximum hight of the rocket.
B.) How long does it take to reach the maximum height?
C.) When will the rocket hit the ground?
Stephen La Rocque lui répond. |
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Kicking a field goal |
2007-03-13 |
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san pose la question :
A football player attempts a field goal by kicking the football. The ball follows
the path modelled by the equation h= -4.9^2+10t+3, where h is the height of the
ball above the ground in metres, and t is the time since the ball was kicked
in seconds.
*the ball must clear the uprights for the field goal to count. The uprights are approximately
5 m high. How long does the ball stay above 5 m in height?
Penny Nom lui répond. |
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The height of a hexagonal pyramid |
2007-03-07 |
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Carol pose la question :
i have been set a question that gives a regular hexagon and each of the sloping sides is 6cm from a corner of a base to the apex(point). it also has 2cm sides it looks sort of like this:
/\6cm
2cm
Penny Nom lui répond. |
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Finding the vertical height of a roof |
2007-03-05 |
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Zainab pose la question :
The question is: If the vertical height if a triangle is half the width of the base and the slant length is 6 metres, find the exact vertical height of this part of the roof. I'm actually confused about finding out the height of an equilateral triangle if you're only given the length or slant height. Please help! O.o
Stephen La Rocque lui répond. |
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The height of a triangle |
2007-02-28 |
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A parent pose la question :
The side of a triangle is 16 inches. The base of the triangle is 8 inches. How tall is the triangle?
Penny Nom and Brennan Yaremko lui répond. |
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The height of an isosceles triangle |
2007-01-27 |
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Brendan pose la question :
I need to find the height of an isosceles triangle whose angles are 52, 52 and 76 degrees. The base is 100, and the two equal sides are unknown. How would I go about this?
Stephen La Rocque lui répond. |
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The height of a triangle |
2007-01-17 |
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Sharon pose la question :
I am needing to determine the height of a triangle with a 50 ft base and one side is 40 ft the other side being 30 ft.
Penny Nom lui répond. |
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The height of a triangle |
2007-01-14 |
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Shanelle pose la question :
I'm trying to find the height of a triangle but i only know the base and one of the sides as well as the angle between those two sides...but how can i find the height?
Penny Nom lui répond. |
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The height of a triangle |
2006-12-01 |
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Jeni pose la question :
I need to know how to figure out the height of a triangle when all I know are the sides and base. The sides are 5 and the base is 8 What do I do?
Penny Nom lui répond. |
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What is the height of the arc of the earth over a certain distance? |
2006-12-01 |
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Thomas pose la question :
what is the height of the arc of the earth over a certain distance?
Penny Nom lui répond. |
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The height of a building |
2006-11-19 |
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Sweetie pose la question :
I have to figure out the measure of the water towers antenna on my schools campus using up to two items created by me and a manual. I don't know far away we are going to have to be. I need to have a fool proof way to figure out the distance to the tower. I have an idea using trigonometry but its really roughly estimated. Do you have any suggestions?
Stephen La Rocque lui répond. |
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The height of a triangle as a function |
2006-10-19 |
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Ryan pose la question :
Let 2s denote the length of the side of an equilateral triangle. Express the height of the triangle as a function of s
Penny Nom lui répond. |
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find the height of the tower |
2006-06-17 |
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Evelyn pose la question :
The angle of elevation from a point 89.6' from the base of a tower to the top of the tower is 42'40'... find the height of the tower
Penny Nom lui répond. |
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The height of an isosceles triangle |
2006-04-01 |
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Chris pose la question :
how do you work out the height of an isosceles triangle if i know the length of the base but i don't know any angles or the lengths of the sides?
Penny Nom lui répond. |
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A plant increases its height by 1/2 the first day,... |
2006-03-30 |
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Andy pose la question :
A plant increases its height by 1/2 the first day, 1/3 the second day, 1/4 the third day and so on. How many days did it take to grow to 100 times its height?
Stephen La Rocque lui répond. |
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What is the height of the pot? |
2006-03-10 |
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Michelle pose la question :
If a pot is 11 inches in diameter and holds 5.8 litres what is the height of the pot? - assuming it is a cylinder.
Stephen La Rocque lui répond. |
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Heights and shadows |
2006-03-06 |
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Debra pose la question :
A person is 7 ft tall and his shadow is 10 ft tall. using the same info what is the shadow of a person who is 5ft tall
Stephen La Rocque lui répond. |
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The height of a cylinder |
2006-02-15 |
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Autumn pose la question :
the surface area of a cylinder with circumference 24pi cm. is 300pi cm2 . what is the height???
Penny Nom lui répond. |
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how can i find the height of a triangle if i have the base and the hypotenuse |
2006-01-27 |
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Kelsey pose la question :
how can i find the height of a triangle if i have the base and the hypotenuse
Penny Nom lui répond. |
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The height of a triangle from the lengths of the sides |
2006-01-16 |
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A student pose la question :
How do you figure out the height of a triangle when all you have is the length of the sides of the triangle?
Claude Tardif lui répond. |
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What initial velocity is required to double the maximum height |
2006-01-14 |
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A photographer pose la question :
A body is thrown into the air with an initial velocity V ft./sec. What initial velocity is required to double the maximum height previously obtained?
Penny Nom lui répond. |
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The height of a right triangle |
2005-12-21 |
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Sanmantha pose la question :
I am trying to solve for the height of a right triangle. The base is .05 mm, and the apex is 0.5 degrees. I vaguely recall from high school that this should be enough information to solve for height, but I can't remember what equation(s) to use.
Penny Nom lui répond. |
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The elevation of the top of the house |
2005-11-13 |
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Chloe pose la question :
Karen is standing 23 metres away from the base of a 23 metre high house. Assume that Karen's eyes are 1.5 metres above ground. Find the elevation of the top of the house from Karen's eye line.
Penny Nom lui répond. |
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The height of a tower |
2005-11-08 |
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Vinita pose la question :
Observers at point A and B, who Stand on level ground on opposite sides of a tower, measure the angle of elevation to the top of the tower to be 33 degrees and 49 degrees respectively. Another point C is 120 m from point B, Triangle ABC =67 degrees and BAC = 31 degrees. Find the height of the tower to the nearest metre.
Penny Nom lui répond. |
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Determine the height |
2005-10-14 |
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Paul pose la question :
if you know the distance to the base and the angle to the top how can you determine the height
Penny Nom lui répond. |
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Find the height of the pole |
2005-03-22 |
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Dorothy Jean pose la question :
From the top of a building 70ft.high, the angle of elevation of the top of the pole is 11.2 degrees. From the bottom of the building the angle of elevation of the top of the pole is 33.4 degrees. Find the (a) height of the pole and (b) the distance from the building.
Penny Nom lui répond. |
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Finding the height of a triangle |
2004-09-14 |
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A student pose la question :
I have to calculate the height of a triangle.
The base is 6 (units)say ab
One of the top sides is 4 (units)say ca
The other side is 2 (units) say cb
I don't know the angles.
How to find the height?
Chris Fisher and Penny Nom lui répond. |
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The height of a building |
2004-06-16 |
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Lauren pose la question :
I have a homework assignment to measure a building on my school's campus. I have to stand at least 40 ft away from the building and find the angle of elevation from my feet to the top of the building. Then I have to walk at least 40 ft form that point, record the distance as X, and find the angle of elevation from my feet to the top of the building. Using X and the angles, I have to determine the height of the building. I used a protractor and a weighted string to find the angle of elevation from my eyes to the top of the building. But I haven't been able to find the way to measure the angle of elevation from my feet to the top.
Penny Nom lui répond. |
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The base of a triangle |
2004-05-25 |
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Ralph pose la question :
With a 30 degree angle at the top of a triangle and a height of 15 what is the base?
Penny Nom lui répond. |
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The height of a triangle |
2004-04-27 |
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Danielle pose la question :
what is the definition of height of a triangle?
Penny Nom lui répond. |
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The height of a building |
2004-03-31 |
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Nat pose la question :
Two buildings are 26.3m apart. From the top of the shorter building the angle of elevation to the top of the taller building is 35.9 degrees and the angle of depression to the base of the taller building is 54.7 degrees. What is the height of the taller building?
Penny Nom lui répond. |
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A geometry problem |
2003-07-08 |
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Chris pose la question :
My name is Chris, I work for a custom fabricator company. I am needing a formula for the Height (H) shown in the attached picture. The picture shows dimensions for my current application. If you could please, assign variables to the dimensions.
Harley Weston lui répond. |
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The height of an equilateral triangle |
2003-04-06 |
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Rosa pose la question :
If Each side of an equilateral triangle is 10 m. What is the height?
Penny Nom lui répond. |
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The dimensions of a box |
2002-12-03 |
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Paula pose la question :
My son, who is in secondary school, needs to make a box with the inside dimensions of 1.25 cubic feet. It's supposed to be more in the shape of a rectangle than a square. I would like to know the equation to use to find the inside dimensions of a box if I know how many cubic feet (or inches) I need the inside to be.
Penny Nom lui répond. |
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The height of a triangle |
2002-11-29 |
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Dean pose la question :
Could you please tell me the formular for me to calculate the height of a triangle. I have the angles and side lengths. I am trying to calculate the height of an isosceles triangle, does this make a difference from a normal triangle or is the formular the same.
Penny Nom lui répond. |
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A cone that is cut off at the top |
2002-09-23 |
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Stuart pose la question :
I have to work out the dimensions and arcs of a cone that is cut off at the top. I.e Top diameter is 33mm to bottom diameter is 43mm and the depth is 80mm Are you able to work what the flat of this cone would be as I need to design within the flat area and then have it cut out. I really need to know what the flat of it is before it is cut and curled to form the above cone.
Walter Whiteley lui répond. |
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The height of the lamppost |
2001-10-02 |
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Werner pose la question :
I am working on question 51,section 3.7 ,page 191 of Stewart's Single Variable Calculus. The question involves a lamp post which is casting a shadow around the eliipse whose formula is x2 + 4*y2 = 5. I have found the derivative of the elllipse both explicitly: x/4(((5-x2)/4)0.5) and implicitly : y' = - x/(4*y).
Harley Weston lui répond. |
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How tall is the tree? |
2001-03-02 |
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Ronda pose la question :
a tree's shadow is 42 ft. long. There is a stop sign that is right next to it and it is 18 ft. tall and it's shadow is 12 ft. long. How tall is the tree?
Penny Nom lui répond. |
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Height of the lamp |
2000-12-31 |
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Joey pose la question :
The figure shows a lamp located three units to the right of the y-axis and a shadow created by the elliptical region x2 + 4y2 < 5. If the point (-5,0) is on the edge of the shadow, how far above the x-axis is the lamp located?
Harley Weston lui répond. |
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Lobbing a tennis ball |
2000-10-31 |
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Alex pose la question :
If a tennis ball is lobbed into the air with an initial upward velocity of 12 meters per second, its velocity and height will be functions of time in flight described by the following rules: V=12-9.8T and H=1+12T-4.9T 2 Find the maximum height of the tennis ball and the time it takes to reach that height.
Penny Nom lui répond. |
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Slant height of a cone |
2000-02-24 |
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Jocelyn Wozney pose la question :
I need help with this problem for my high school calculus class. Any help you can give me will be greatly appreciated-I am pretty stumped. "Express the volume of a cone in terms of the slant height 'e' and the semi-vertical angle 'x' and find the value of 'x' for which the volume is a maximum if 'e' is constant.
Harley Weston lui répond. |
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Girth |
1999-05-26 |
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Carolyn Bulkley pose la question :
I am trying to explain to my son (who is in the 8th grade) how to figure girth. I'm afraid I have just confused him. Is there a simply formula to figure the girth of a box. for example: I have a box that is 27" L X 22" W X 21" H.
Penny Nom lui répond. |
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The bricklayers formula |
1998-11-24 |
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Rachel Kaplan pose la question :
I have to do a report on the bricklayers formula N = 7LH. Can you give me any information on this.
Harley Weston lui répond. |
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Area of a Triangle. |
1998-03-05 |
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Amanda pose la question :
How do you figure out the area of a triangle? You already have the perimeter and height
Penny Nom lui répond. |
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