 |
|
|
|
|
|
|
|
|
The length of an arc |
2007-09-26 |
|
swarna pose la question :
a wire of length 32 cm is bend to form a sector of circle of radius of 6 cm find the length of the arc of the sector
Penny Nom lui répond. |
|
|
|
|
|
|
A sector of a circle |
2007-09-26 |
|
A student pose la question :
hi im stuck on this question. i have tried to do some, could you please che=
ck it and help me.the answers i have worked out are in red. the question is=
attached. thank you.
Penny Nom lui répond. |
|
|
|
|
|
|
Nine dots |
2007-09-25 |
|
al pose la question :
Connect the dots.
There is nine dots, three across and three down.
Connect the nine dot with the pencil only using four line and never lifting the pencil off of the paper.
Stephen La Rocque and Harley Weston lui répond. |
|
|
|
|
|
|
Can you tell me how many gallons it holds? |
2007-09-25 |
|
Jeff pose la question :
Hi my water tank is 10ft long and 45" around,can you tell me how many
gallons it holds.thankyou jeff
Penny Nom lui répond. |
|
|
|
|
|
|
The nth term |
2007-09-25 |
|
Bobby pose la question :
whats the nth term of 2,12,22,32 ?
Penny Nom lui répond. |
|
|
|
|
|
|
1 foot of snow = how much rain |
2007-09-25 |
|
Lisa pose la question :
1foot of snow = how much rain
Penny Nom lui répond. |
|
|
|
|
|
|
A geodesic dome |
2007-09-25 |
|
Roger pose la question :
In my Science-Fiction series, I have a Dyson's Sphere tiled with
regular hexagons. The number of hexagons is over 300,000 and the
radius of the Sphere is roughly 80,000,000 miles. The actual size of the
Sphere and hexagons have been left flexible until I can come up with a
definite number of hexagons that would fit. My problem is the pattern of
hexagons which would fit within the sphere without leaving gaps or
overlapping.
My best guess has been to use four equilateral triangles composed of 78606
hexagons, (396 per edge) arranged around the sphere with six 'zippers' to
connect them and four 'caps' at the points, for a total of 316804 hexagons.
Given the fact that each Hex is the same size, does this seem plausible?
Is there some pattern formula I can use to play with these figures? Simple
divsion of areas will not work if the number derived will not fit into the
pattern to leave a perfectly tiled surface. Thank you.
Chris Fisher lui répond. |
|
|
|
|
|
|
Cubic meters, square feet and office space |
2007-09-25 |
|
Kathryn pose la question :
Can someone please help and let me know how do you convert 11 cubic meters into square footage?
Steve La Rocque and Harley Weston lui répond. |
|
|
|
|
|
|
1/2+X=5/8 |
2007-09-24 |
|
Tasha pose la question :
What is the sum of X in the problem below and explain your answer please?
1/2+X=5/8
Chris Langdon lui répond. |
|
|
|
|
|
|
A piece of wire is bent in the form of a circle |
2007-09-24 |
|
Renece pose la question :
a piece of wire is bent in the form of a circle and it encloses an area of 154cm
a) calculate the radius of the circle
b) the circumference of the circle
use 22/7
The same piece of wire is then bent into a square
d) calculate the area enclosed by the square.
Penny Nom lui répond. |
|
|
|
|
|
|
Exponential regression |
2007-09-24 |
|
Anonymous pose la question :
I need help in finding this. Find a formula for exponential regression.
Determine how to calculate a and b in the formula.
Y = ba^x
where y is as a function of x.
Penny Nom lui répond. |
|
|
|
|
|
|
A truncated prism |
2007-09-24 |
|
Simon pose la question :
What is the name of a triangular prism with the top of the top of the prism cut off called please.
It is therefore flat on top and flat on the bottom with prism sides. Thanks.
Harley Weston lui répond. |
|
|
|
|
|
|
A 3 ounce piece of gold |
2007-09-24 |
|
Helen pose la question :
What would the volume (in mL) of a 3 ounce piece of gold be?
16oz= 1lb
1lb= 454oz.
first i converted 3oz to lbs and then to grams to get the mass. i got 85.125 g.
now i don't know how to get the density to get to the volume.
Stephen La Rocque lui répond. |
|
|
|
|
|
|
A convex quadrilateral |
2007-09-24 |
|
alex pose la question :
if a convex quadrilateral ABCD is set up so that angles b and c are fixed (for example angle b= 73 and angle c =150), and
sides AB and CD are congruent; can angles a and b vary, or are they also fixed
Brent Michelson lui répond. |
|
|
|
|
|
|
Large exponents |
2007-09-24 |
|
Kira pose la question :
Is there an easy way to calculate a number with a large exponent? For example, 2(10)^35.
Stephen La Rocque and Victoria West lui répond. |
|
|
