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	Nombres algebriques sur Q		2002-04-11
		Un eleve pose la question : On sait que le corps des nombres algebriques sur Q est algebriquement clos. A priori partant d'un polynome f a coefficients algebriques sur Q on devrait pouvoir un trouver un polynome g a coefficients rationnels dont une partie des racines est constituee de racines du premier. y-at-il un algorithme qui permet qui permet le passage de f a g ? Claude Tardif lui répond.
	The surface area of a dome		2020-09-13
		Sue pose la question : i need to know the outside square footage of a dome house 24ft across at the bottom and 16ft high so i know how much paint it will take to cover it. Harley Weston lui répond.
	Forming the largest cylinder		2020-05-20
		Amanda pose la question : How do I find the maximum surface area and volume of a cylinder made up of ONE 8.5x11 piece of paper? Penny Nom lui répond.
	The volume under an an uneven surface		2020-05-01
		Solon pose la question : I am trying to fill an area of floor which has an uneven surface. I need to know the volume of fill. If you imagine a rectangular room (4 corners) that measures 189 inches by 240 inches and the depth at each corner is different. Let us say corner #1 has a depth of 1", corner #2 has a depth of 0", corner #3 has a depth of 2" and corner #4 has a depth of 4". How would i find the volume of said floor area? Any assistance would be greatly appreciated! Harley Weston lui répond.
	The area and volume of a wedge		2019-11-30
		Jasmine pose la question : what is the volume and surface area of a wedge with definition Penny Nom lui répond.
	Volume and Surface area of a sphere		2019-05-03
		Caitlin pose la question : Why does the surface area formula of a sphere have a squared radius while the volume of a sphere has a cubed radius? Penny Nom lui répond.
	The surface area of a dome		2018-12-18
		Chithrabhanu pose la question : If a dom dia is 4.552 and the height is 1.21 what is the surface area? Penny Nom lui répond.
	The surface area of a levee		2018-07-04
		John pose la question : Figuring out the surface area in sq. Ft. Of a levee Height:10’ Top of levee width: 6’ Width of base (from toe to toe): 40’ Length of levee: 1,250’ Penny Nom lui répond.
	A rectangular prism with rounded corners		2018-04-25
		Jackie pose la question : Rectangular prism that is 40 by 20 with rounded corners with a radius of 2.5. What would the surface area be? Penny Nom lui répond.
	Surface area of a hemisphere		2017-10-28
		Shaina pose la question : If the total surface area of a hemisphere be 36.22/7 cm then its radius will be 3 cm is it true or false Penny Nom lui répond.
	The surface area of a sphere		2017-09-17
		penny pose la question : The surface area of a sphere is 1519.76cm. Taking 3.14 , find the radius of sphere Penny Nom lui répond.
	The surface area of a hexagonal pyramid		2017-06-16
		Emilie pose la question : Hello, I need help with this question: A pyramid has a regular hexagonal base with side lengths of 4 and a slant height of 6. Find the total area of the pyramid. Thank you in advance if you can help me... Penny Nom lui répond.
	Corrosion inhibitor in a pipeline		2016-03-02
		Edu pose la question : I have a 12 in pipeline and 5 miles long. I need to coat it with corrosion inhibitor how much chemical will I need Penny Nom lui répond.
	An algebra problem with a sphere		2016-02-29
		Sania pose la question : If the number of square centimeters on the surface area of a sphere is equal to the number of cubic centimeters in its volume find its diameter Penny Nom lui répond.
	The surface area of a round bar		2015-06-06
		chirag pose la question : Please tell me the formula for finding round bar surface in square inches/ mm Penny Nom lui répond.
	The surface area of a triangular prism		2015-06-03
		Alex pose la question : Find the surface area of a triangular prism with Isoceles triangles and dimensions 4 feet by 6 feet Penny Nom lui répond.
	The surface area of a hemisphere		2015-05-05
		Mandy pose la question : How can I show that the total surface are of any solid hemisphere is 75% of the area of the full sphere? Penny Nom lui répond.
	The surface area of a cut pipe		2015-04-27
		ARUN pose la question : dear Sir, please advise me , how to calculate the surface area of a pipe with diameter of 630 mm and thickness of 67 mm which is cut in a angle of 22.5 degree. please show me how to calculate the surface area of the pipe which cut in an angle. Thanking you. Harley Weston lui répond.
	The radius of a cylinder		2015-02-26
		Rose pose la question : Hi. I want to know how to find the radius of cylinder. When I have height (35cm) and area of the curved surface(880sq.cm). I know the formula is 2πr(h+r). But I can't understand how to find it's radius. Please help me. I really need your help. Penny Nom lui répond.
	A cuboid		2014-12-11
		Nehal pose la question : Six cubes have a surface area of 24 cm2. They are joined together to male a cuboid. What could the surface area of this cuboid be? There are two different answers. Penny Nom lui répond.
	A triangle on the surface of the Earth		2014-06-26
		Christine pose la question : A, B and C are three towns, the bearing of B and C from A being 310 degrees and 220 degrees, and their distances from A are 510km and 700km respectively. Find the bearing of B from C to the nearest minute. Robert Dawson lui répond.
	Surface area		2014-05-02
		vijay pose la question : If a square paper of side 25 cm is rolled to form a cylinder, then its curved surface area is Penny Nom lui répond.
	The surface area of a circular dome		2014-04-10
		Shafiqah pose la question : Is this a dome's surface area formula?? {{2 × π r × h square units}} Is the surface area of the floor for the dome is calculate too in this formula? Thanks for answering. =) Robert Dawson and Penny Nom lui répond.
	The surface area of a rectangular prism		2014-04-08
		Manraj pose la question : Find the surface area of a rectangular prism with dimensions 4, 5, and 7 units. Penny Nom lui répond.
	A cubical tank		2014-04-01
		renzo pose la question : A cubical tank contains 2048 cubic ft of water when HALF-FULL. Find the total area of the tank and the length of its diagonal Penny Nom lui répond.
	The faces of a triangle		2014-03-24
		Westun pose la question : Your answer says that a triangle has 0 faces but isn't the part of the shape you see the face!? Because i am having trouble with that so could you help me! thanks! :) Penny Nom lui répond.
	The surface area of a pyramid		2013-06-11
		Sam pose la question : A right rectangular pyramid has a rectangular base measuring 18 cm by 32 cm. The height of the pyramid is 12 cm. What is the surface area? Penny Nom lui répond.
	The surface of a solid		2013-05-07
		mustafa pose la question : I am doing a research paper on solid surface applications . Part of the project is to find four at least in our world today and explain what there purpose is. I really need help in this area because I've been searching the internet for where solid surface are used in our world today and I really can't find anything.. Thanking you in advance, mustafa Penny Nom lui répond.
	Frosting a three layer cake		2012-10-30
		johnathan pose la question : Each layer of a 3 layer cake is a cylinder with height 7.5 cm. The bottom layer has diamegter 25 cm. The middle layer has dimegter 22.5 cm. The top layer has diameter 20 cm. The surface of the cke is frosted. What area of the cake is frosted. I get 1695.56 but the answer in the book is 2081.3 Penny Nom lui répond.
	Painting 400 drums		2012-10-05
		Jordan pose la question : This cylinder is given: Cylinder with a height of 84 cm and a diameter of 54 cm. Question: The exterior of the drum (cylinder), except the base, is to be painted blue. calculate how many litres of paint will be needed to paint 400 drums if one litre of paint covers 8.8meters Squared. Answer to nearest tenth of a litre. Harley Weston lui répond.
	\mbox		2012-10-05
		Jordan pose la question : This cylinder is given: Cylinder with a height of 84 cm and a diameter of 54 cm. Question: The exterior of the drum (cylinder), except the base, is to be painted blue. calculate how many litres of paint will be needed to paint 400 drums if one litre of paint covers 8.8meters Squared. Answer to nearest tenth of a litre. Harley Weston lui répond.
	The surface area of a dome		2012-06-06
		sravya pose la question : how to calculate surface area of a dome if its base radius and height are known and neither it is hemisphere nor radius of sphere is known?? Walter Whiteley lui répond.
	The surface area of the tetrahedron		2012-04-04
		youssef pose la question : how to find the total surface area of the tetrahedron ? Penny Nom lui répond.
	A cylindrical container		2012-02-14
		KRIS pose la question : YOU ARE PaCKAGING 4 EQUAL SIZED PAINT CANS WITH A RADIUS 8CM AND A HEIGHT OF 20CM, IN A CIRCULAR CONTAINER.What is the surface area of the packing container? Penny Nom lui répond.
	Wallpapering a room		2012-02-08
		jimmy pose la question : Ms. Frank is going to wallpaper a living room with dimensions 24 feet long, 18 feet wide, and 8 feet high. What surface area does Ms. Frank plan to wallpaper? Penny Nom lui répond.
	A border around a flower garden		2011-08-28
		jessica pose la question : A Landscaper, who just completed a rectangular flower garden measuring 6 feet by 10 feet, orders 1 cubic yard of premixed cement, all of which is to be used to create a border of uniform width around the garden. if the border is to have a depth of 3 inches, how wide will the border be? ( 1 cubic yard=27 cubic feet) Penny Nom lui répond.
	A cone with an oval as a base		2011-08-03
		Emily pose la question : Hi, I was wondering how to calculate the surface area of a cone with an oval as a base (which I think is referred to as an elliptic cone or something like that). I have the both the maximum and minimum radius as well as the height, but I don't have a slant height and I'm not sure how to calculate it and then calculate surface area. I would really appreciate some help. Thanks! Robert Dawson lui répond.
	The surface area of a hemisphere		2011-05-29
		Brenda pose la question : What is the surface area of a hemisphere with a radius of 2 inches? Penny Nom lui répond.
	The radius of a cylinder		2011-04-27
		Jazmin pose la question : Hi, I don't understand how to find the radius in a cylinder with only the surface area (143.7) and the height (0.8)? I know that the formula is 2pir2+2pirh, but I don't see how to isolate the r? I appreciate your help. Penny Nom lui répond.
	The number of points on a line is equivalent to that of a surface		2011-03-24
		Gary pose la question : I I was reading about how the number of points on a line is equivalent to that of a surface. This was done by taking any point on a line then taking alternating digits and making them as points on an x and y axis therefore points on a surface.The problem is as i see it if you just take a line then hold it over a surface you have just put the points on the line in a one to one correspondence with the points directly under it on the surface.Now you have all the rest of the surface which cannot be mapped onto the line since it is already used up.What am i missing? Penny Nom lui répond.
	6 faces and 8 corners		2011-03-04
		noemi pose la question : jeff made a figure with 6 faces the figure has 8 corners all of the faces are the same size and shape what figure did jeff make Penny Nom lui répond.
	Vertices and sides of a polygon		2011-03-04
		RINA pose la question : My questions is : would a vertices and sides of a polygon be the same number.  For example, a octagon it has 8 points and 8 sides. Am i correct? Robert Dawson lui répond.
	Cutting the top off a conical tent		2011-02-22
		tom pose la question : how far from the top must you cut a conical tent in order to cut the cloth in half... Penny Nom lui répond.
	Tiling a swimming pool		2011-01-09
		rustom pose la question : (a) Find the volume of water in swimming pool with vertical ends and sides . The length measured at the water line is 50 ft. and the breadth is 20 ft. The bottom of the swimming pool is a plane sloping gradually downward so that the depth of the water at one end is 4 ft. and 8ft. at the other end. (b) If the sides, ends, and bottom of the swimming pool are constructed of tile blocks whose glaze surface dimensions are 3in by 6in. , and if the ends and sides of the pool extend 2ft.above the water level, find the number of blocks used if 1/20 of the surface area is covered by sealing material. I got the (a) question but I don't know the (b) question which have the answer of 16,136 blocks. I hope I can get the procedure for this, THANK YOU! Penny Nom lui répond.
	The outside surface area of a U shaped tube		2010-06-03
		Adolfo pose la question : What is the formula for calculating the outside surface area of a U shaped tube? Robert Dawson lui répond.
	A cylindrical vessel with belled ends		2010-06-01
		George pose la question : surface area of a vessel with a cylindrical length of 60 feet, a diameter of 10 feet, and with belled ends of 5-foot radius Penny Nom lui répond.
	Painting a hemispheric dome		2010-05-09
		Jone pose la question : If a hemispheric dome has a height of 20m and it take 5 gallons of paint to paint the floor, how many gallons of pain are needed to paint the inside of the dome? Penny Nom lui répond.
	Pyramids and parallelograms		2010-04-01
		Vivi pose la question : Hi, my name is Vivi, and math teacher is giving a geometry test. I tend to forget how to find the surface area and volume of triangular pyramids and parallelograms. Do you have a way of remembering how to find the surface area? Harley Weston lui répond.
	A triangular pyramid		2010-01-05
		ally pose la question : how many vertices, edges, faces in a triangular pyramid? Robert Dawson lui répond.
	Surface area of a dome		2009-09-16
		Charlie pose la question : Why is the calculation for the surface area of a domed tank less than the surface area of a flat top tank. Using domed tank formula 2*pi*r(r-(r-dome ht) works out to be less surface area than a flat top tank area formula pi*r x r, Shouldn't the dome have more surface area than the flat surface ? Harley Weston lui répond.
	A spherical dome		2009-08-03
		Eric pose la question : I have recently been asked to resurface a dome sculpture for my local council but i'm having problems working out the area. Here are the dimensions. The height of the dome is 3m from the ground to the top of the arc. The arc itself from the ground rising up to the 3m point and back down, is 10m. The dome is 7m wide from one side to the other through the centre, at ground level. I hope there is enough detail here. It's been a long time since i was in a maths class. Thank you, hope to here from you soon! Stephen La Rocque lui répond.
	The surface area of a rectangular pyramid		2009-07-13
		Shivani pose la question : What is the surface area of a rectangular pyramid with a length of 6 inches, a width of 7 inches and a SLANT height of 4 inches. Penny Nom lui répond.
	The surface area of a fire pit		2009-06-30
		eric pose la question : whatw is the square footage of the inside wall of a fire pit 2 feet deep and five feet in diameter? I need to estimate both the floor and wall square footage to order bricks. Robert Dawson and Harley Weston lui répond.
	The surface area of a tank		2009-06-25
		Charles pose la question : I need to calculate the external wall and top sqft surface area of a tank 54ft od x 15ft high with a dome top 54ft od x 8ft high. Penny Nom lui répond.
	Constructing a cube		2009-04-08
		Jill pose la question : you have a sheet of cardboard that measures 9ft x 6ft. To make the entire sheet into a closed box tht is a perfect cube, what would be the surface area of the box? Robert Dawson lui répond.
	A triangular pyramid		2009-02-26
		Craig pose la question : Can you help with this question: Write the names of the faces and the number of each kind of face on a triangular pyramid? Penny Nom lui répond.
	Surface area of a cube		2009-02-22
		JOHNNIER pose la question : determine the surface area of a cube with volume 125 mm3, thank u very much Penny Nom lui répond.
	Surface area and scale factors		2009-02-21
		tina pose la question : the surface area of a sphere is about 86 ft (2) find the surface area of a larger sphere that has a scale factor of 4 Penny Nom lui répond.
	The focal point of a parabolic surface		2009-02-20
		kishore pose la question : how to find out the focal point of a parabolic surfaces Chris Langdon lui répond.
	Vertices, edges and faces		2009-02-19
		Deb pose la question : I have been reading the responses you have to whether or not a cone and cylinder have edges, and whether a cone has a vertex. I have also found differing answers in different books and websites. Your idea that it depends why we want to call it a vertex or edge is interesting but does not help the students next year when they have a different teacher who tells them that whatever decision I make is wrong! It also doesn't help them when they do the provincial testing. Does anyone know if EQAO considers them vertices or edges? I want to know because textbooks and provincial tests often ask the students to count the number of faces, edges, and vertices or to describe a solid by using these, or to identify a solid that they have described. We need to have consistency in what we are teaching! Chris Fisher lui répond.
	The surface area of a cube and rectangular prism		2009-02-16
		Mhiko pose la question : how to derived the total surface area of a cube and rectangular prism using geoboard?? Robert Dawson lui répond.
	Faces, edges and vertices		2009-02-04
		sheila pose la question : what is the relationship between the number of faces and the number of edges of a triangular pyramid ? Penny Nom lui répond.
	How fast is the visible surface of the earth decreasing?		2009-01-24
		Ray pose la question : A dive bomber loss altitude at a rate of 400 mph. How fast is the visible surface of the earth decreasing when the bomber is one mile high? Harley Weston lui répond.
	Surface area of an irregular shape		2008-12-15
		Patrick pose la question : An irregular shaped object (lets say a gold nugget, not smooth with pockets) can have its volume determined by comparing its mass in water. Is there any method or means or anything that could be used to determine the surface area of this shape? Whether that be theoretical mathematical formula to using a special infrared technique,etc... The problem I foresee is that the component parts cannot be divided into smaller geometric shapes. I would propose an answer although I don't know if it is a good one: A liquid material that dries super-thin, but has a very specific and easily determined volume/mass is coated over the object. Measure the mass difference between the beginning sample of fluid and the mass after the object has been coated. Then determine the surface area of the same mass of fluid in a geometric shape. Is this feasible? Robert Dawson lui répond.
	A cereal box that has a volume of 12000cm^3		2008-11-24
		William pose la question : Hi, I have this math question that says construct a ceral box that has a volume of 12000cm3 and the surface area of the box has to be between 3200cm2 and 400cm2, I found some dimensions that are 20 by 20 by 30 and it works, but when I attempt to make the box, or make a net I would need this hugh piece of paper/cardboard, which I don't have, is there an easier way to find different dimenshions so I dont need a hugh piece of paper to create a net easily? Because i've tried trial and error but it has taken to long and I cant find anything,else, thats resonable. Harley Weston lui répond.
	Scaling a logo		2008-10-20
		Carl pose la question : Hello! I hope that you can help me out here. I've been trying to figure this out for awhile now and can't come up with the answer logically. I am a graphic designer by trade and need to figure out how large my client's logo should be. The logo will need to be sized proportionally with the surface area of the page. The logo will always be sized at 1.2938(w) x .75(h) on a letter size page (8.5 x 11). My question is... When you increase the size of the page (not always proportionally sized - dimensionally) how do figure out the NEW size of the logo. I could have a page 20" x 40" or 30' x 4'... or ANY size really. I believe I have the new surface area of the logo but can't find the new dimensions. Harley Weston lui répond.
	Hidden Faces of a Row of Cubes		2008-08-25
		Mhiko pose la question : how many hidden faces of a cubes are there in a 5 cubes in a row? how many hidden faces of a cubes are there in a 10 cubes in a row? how many hidden faces of a cubes are there in a 15 cubes in a row? how many hidden faces of a cubes are there in a 20 cubes in a row? please show me the solution or formula.... Janice Cotcher lui répond.
	Exterior square footage of a dome		2008-08-19
		Richard pose la question : I have to gold leaf a dome with a circumference of 29'. What would the exterior square footage be? Penny Nom lui répond.
	The angle between two faces of a pyramid		2008-08-06
		Carla pose la question : A pyramid has its vertex directly above the centre of its square base. The edges of the base are each 6cm, and the vertical height is 8cm. Find the angle between 2 adjacent slant faces. Penny Nom lui répond.
	How many face does a cone have?		2008-06-21
		Vanessa pose la question : How many face does a cone have? Harley Weston lui répond.
	A right prism with a square base		2008-06-13
		Malik pose la question : Question from Malik: A company wants to alter the dimension of container. The new container is in the shape of right prism equivalent to the current one. The current container has height of 12cm and square base. The new container has also square base, but in the dimension base is increased by 3cm and height is decreased by 5cm. if the cardboard is used to manufacture the new container, what area of cardboard is used to make new container? Penny Nom lui répond.
	The surface area of a lemon		2008-06-11
		Susan pose la question : How would I find the surface area of a lemon Harley Weston lui répond.
	The surface area of an "egg shaped" object		2008-05-28
		Tom pose la question : How do you calculated the surface area of an "egg shaped" object (ovoid) ? Harley Weston lui répond.
	The surface area of a cube		2008-05-24
		cailtlin pose la question : hi.. if the surface area of a cube is 384 cm^2, how could i find the length of one edge? thank you Penny Nom lui répond.
	The surface area of a tank		2008-05-09
		jack pose la question : i'm looking for the square footage of a tank that is 10'diameter x 23'high,floor,ceiling and walls Penny Nom lui répond.
	Surface area		2008-05-01
		John pose la question : I am working with concrete and need some assistance please. I am trying to figure out what the surface space is for a one cubic foot that is four inches thick? Penny Nom lui répond.
	A shape		2008-04-03
		Joshua pose la question : what shape has 4 faces, 4 corners and 9 edges. Penny Nom lui répond.
	The number of faces and vertices in a pyramid		2008-04-02
		Laurie pose la question : Can you find a connection between the number of faces and vertices in a pyramid and the number of sides of it's base??? Penny Nom lui répond.
	A rectangular prism		2008-03-31
		Chanlie pose la question : i need need to find a rectangular prism with a total surface area of 210 units. Penny Nom lui répond.
	The surface area of a cube and a cylinder		2008-03-16
		sunday pose la question : I'm doing a unit assessment, and there is something I don't understand. Now in my textbook, it says that surface area for a cube is different from a cylinder. Surface area for a cylinder has two numbers, but surface area for a cube has 3 or more numbers. And plus, I can't figure out the volume for a cube because it only shows volume for a cylinder. So how do I get this right? Harley Weston lui répond.
	The surface area of an ellipse		2008-02-25
		paritosh pose la question : how is the surface area of a elliptical dome be calculated when the two diameters are 55 metres and 35 metres and the height of the structure is 13.4 mts? Harley Weston lui répond.
	What solid figure has 1 flat surface and 0 vertices?		2008-01-30
		Cheronda pose la question : What solid figure has 1 flat surface and 0 vertices? Stephen La Rocque and Harley Weston lui répond.
	The surface area of a hemisphere		2008-01-14
		Nicholas pose la question : the surface area of a hemisphere is 1062 cm2. What is the radius? Penny Nom lui répond.
	The surface area of the rectangular solid		2007-12-30
		Sara pose la question : For my math homework i found the volume of a rectangular solid whose deminsions were in feet and the numbers were 10 by 20 by 30 10 = hight 20 = short side base 30 = long side base and now i have to find the surface area of the rectangular solid.... i know how to do this but i can't get the right answer it should be 2,200 ft squared but i keep getting 13,00 feet squared Penny Nom lui répond.
	Partitioning a clock face		2007-12-19
		Kim pose la question : Using a clock with a regular circular faced dial, draw two straight lines such that the sum of the numbers in each of the three areas is equal. The team at Math Central lui répond.
	Square yards		2007-11-30
		Chad pose la question : I need to convert 4,599 Cubic Yards to Square yards. The thickness is 10 inches. Is there a formula for this conversion. Thanks, Penny Nom lui répond.
	Changing units and sizes of things		2007-11-08
		Carol pose la question : volume of cube = 216 cubic inches how do I calculate cubic feet and calculate its surface area in square feet. a rectangular box has dimensions of 3 x 6 x 15 how do I calculate surface area in square yards and calculate volume in cubic inches. if I double the dimensions how does it affect the volume Stephen La Rocque lui répond.
	Measurements on a test tube		2007-10-30
		Bruce pose la question : I figure that the surface area (SA) of a round bottom test tube can be determined by the equation SA = 2pi*h*r where r is the radius of the hemispheric bottom & column part, and h is the height (h) at any point upwards from the bottommost portion in the center of the tube. I haven't been able to come up with an equation yet for the circumference of such a test tube at any point upwards along the tube based on the height in its center or on the distance along the outside of the tube. Harley Weston lui répond.
	Surface area of an open-ended cone		2007-10-16
		Lorne pose la question : What is the surface area of an open ended cone? Measured at 10' high, 16' diameter on the bottom and 2' diameter at the top. Stephen La Rocque lui répond.
	What is the total surface area of a cylinder?		2007-10-03
		MATT pose la question : what is the total surface area of a cylinder with outside diameter 40 cm. thickness 10cm. and length 2m. Work in cm^2 Stephen La Rocque lui répond.
	Dividing the surface of a sphere		2007-09-30
		Jaroslaw pose la question : Is there a formula or method to divide the surface area of a sphere into equal parts. For example; 36 equal parts, 60 equal parts or 92 equal parts and so forth. Chris Fisher and Stephen La Rocque lui répond.
	The surface area of a prism		2007-08-21
		Iliyas pose la question : State the area of prism with logical proof? Penny Nom lui répond.
	A triangular pyramid		2007-07-22
		shani pose la question : my homework question is confusing (yr 7 beginner) "How many vertices does a triangular pyramid have." (Mum thinks all triangles are triangular& vertices are sides) I want to be sure. Penny Nom lui répond.
	Surface area of a coin		2007-07-05
		Anne pose la question : Assuming both sides of a coin are identical, and a line tangent to the inner circle is 23 mm from edge to edge of the coin, and excluding the edge of the coin in the calculation, what is the surface area of the coin, in square millimetres? Stephen La Rocque lui répond.
	Circumscribing a golden cuboid with a sphere: surface areas		2007-06-14
		Ainslie pose la question : A golden cuboid is defined as a rectangular prism whose length, width and height are in the ratio of phi : 1 : 1/phi. Prove that the ratio of the Surface Areas of the golden cuboid to that of the sphere that circumscribes it is Phi : Pi. Stephen La Rocque lui répond.
	How many faces does a triangle have?		2007-06-04
		Daniela pose la question : how many faces does a triangle have? Stephen La Rocque lui répond.
	The surface area of a fire hose		2007-05-26
		Vanessa pose la question : Why do we need to find the surface area of a fire hose (cylinder). Stephen La Rocque lui répond.
	Lateral area of a right cone		2007-05-17
		Crystal pose la question : In my homework the question says the lateral area of a right cone is 226.08 cm cubed. the slant hieght is 12 cm. Find the total surface area. How do I do that? Stephen La Rocque lui répond.
	Hexagonal pyramids		2007-05-17
		Tracey pose la question : How many faces, edges, and vertices does a hexagonal pyramid have? Stephen La Rocque lui répond.
	What's a vertex? What's an edge?		2007-05-16
		Sophie pose la question : I don't understand what is a vertex and what is an edge. Please put a picture up and explain. I am a fifth grader. Brennan Yaremko and Steve La Rocque lui répond.
	Surface area of a cylinder		2007-05-13
		Nina pose la question : if a cylinder is 23 ft high with a 12 ft radius, how do I find the surface area? Penny Nom lui répond.
	How many faces on a prism?		2007-05-10
		Samad pose la question : How many faces does a rectangular prism have? Penny Nom lui répond.
	Area and a square-based pyramid		2007-05-08
		Nick pose la question : For a regular square pyramid with base perimeter 40 and slant height 50, what is the lateral and surface areas? Stephen La Rocque lui répond.
	The area of a pyramid		2007-04-28
		Alexander pose la question : Total area of the plate required to fabricate a vessel(pyramid) the base is 0.6mx0.6m and height of 1.0m. Stephen La Rocque lui répond.
	Vertices, edges and faces		2007-04-19
		Kimberly pose la question : I am trying to help my son find the vertices, edge, and face of a 16 sided figure. I am not sure of the process to use to find these, could you please tell me how to do this? Penny Nom lui répond.
	Surface area of a sphere		2007-04-08
		maria pose la question : I've read your solution to the problem of how to derive the formula of the surface area of the sphere. But i've got a question that initially you demenstrate the area is apprximately equal to that of the lateral area of the cylinder. Afterwards you simply say that the two areas are exactly equal. I'm very confused, how you connect your two statements together. Can you explain to me how they are exactly equal? Your quick reply would be appreciated. Thanks for your help! Stephen La Rocque lui répond.
	Painting a pool		2007-03-25
		vincent pose la question : Determine the total cost to put 2 coats of paint on the interior pool and amount of water needed to fill pool facts: a gallon of paint will cover 50 square feet and cost $18.00 the pool will be filled when water is leveled 6" from the top of pool there are approximately 7.48 gallons of water per cubic foot Rectangle shape pool 36.0 long and 20.0 wide from top Stephen La Rocque lui répond.
	Which solid figure has 4 more edges than vertices?		2007-03-22
		dawn pose la question : which solid figure has 4 more edges than vertices? Penny Nom lui répond.
	The Geosphere at the the Epcot Center park		2007-03-16
		stephanie pose la question : The epcot center has a diameter of 265 ft the park needs to paint the park one can will cover 400 sq ft how many cans do they need ? Stephen La Rocque lui répond.
	Surface area of a triangular prism		2007-02-21
		Katrina pose la question : What is the formula to finding the surface area of a triangular prism? Gabriel Potter lui répond.
	The surface area of a hexagonal prism		2007-02-19
		Cari pose la question : How do you find the surface area of a hexagonal prism? Thank you. Penny Nom lui répond.
	Surface Area of a cone		2007-02-19
		Cari pose la question : I am doing a math project. I am very confused on how to find the surface area of a cone. I have looked at other equtions but i still don't understand. How do you find the surface area of a cone that has a 15cm length and a 3.5cm radius? Penny Nom lui répond.
	What constitutes a face for a geometric solid?		2007-02-14
		Erica pose la question : What constitutes a face for a geometric solid? We have been getting conflicting answers from different textbooks. Some teachers are saying that cylinders and cones do not have faces. I'm thinking that cylinders have 2 and cones have 1. Please enlighten me. Thanks! Walter Whiteley lui répond.
	The surface area of a dome		2007-02-11
		chris pose la question : I need to figure the surface area of a dome which is 96" across and 48" tall. Could you help please? Thanks! Penny Nom and Melanie Tyrer lui répond.
	A cylinder has how many flat surfaces, vertices, and edges?		2007-01-09
		Stacy pose la question : A cylinder has how many flat surfaces, vertices, and edges? Diane Hanson and Penny Nom lui répond.
	The surface area of a triangular prism?		2006-10-29
		Amanda pose la question : What is the formula for the surface area of a triangular prism? Haley Ess lui répond.
	Octagonal Stop Sign		2006-10-23
		Phil pose la question : My colleagues and I are in a discussion about how many true "sides" an octagonal stop sign has. I say that it has 10 true sides because of the front back sides of a stop sign (3D octagon). Is this correct terminology or should the front and back "sides" be referred to as faces -- equaling 2? Paul Betts, Steve La Rocque and Harley Weston lui répond.
	A dome with a square base		2006-10-17
		Danielle pose la question : I need to know how to calculate the area of a dome that has a square base. In order to insulate the room I need to find the area of it but I am not sure how to do so because there is no formula for domes with square bases. Basically, the floor has 4 corners but the ceiling is dome shaped starting directly from the floor. Stephen La Rocque and Penny Nom lui répond.
	What is the radius of the sphere?		2006-05-17
		Jimmy pose la question : The surface area and volume of a sphere are both equal to the product of 4-digit whole numbers and pi. What is the radius of the sphere? Stephen La Rocque lui répond.
	Pythagorus and cone dimensions		2006-04-26
		Glynnis pose la question : How do you find the measure of a side that is not the hypotenuse using the Pythagorean Theorem? Also, how do you figure the surface area and volume of a cone when the radius is 5 yards and the height is 8 yards? Stephen La Rocque lui répond.
	What is the surface area of a cone with a hemisphere on top?		2006-04-20
		Jordan pose la question : How do you find the surface area of a cone with a hemisphere on top? The only information I have is the radius of the hemisphere, which is 4, and the total height, which is 7. Stephen La Rocque lui répond.
	The volume & surface area of a rectangular pyramid.		2006-02-27
		Cheryl pose la question : My daughter is working on a math project & we are having a hard time finding the volume & surface area of a rectangular pyramid. Can you help us with this? Penny Nom lui répond.
	The height of a cylinder		2006-02-15
		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.
	How many flat surfaces does a cylinder have?		2006-02-14
		Kimia pose la question : How many flat surfaces does a cylinder have? Stephen La Rocque lui répond.
	Surface areas		2005-05-11
		Jessica pose la question : How can I demonstrate to my high school students the reason for the formulas for the surface area of a prism, right cylinder, and regular pyramid, and right cone? Penny Nom lui répond.
	Volume and surface area of a prism		2005-04-29
		Melissa pose la question : Can you please tell me if the volume and surface area of a prism can ever be the same? Could you please explain why or why not. Walter Whiteley lui répond.
	The surface area of a pyramid		2004-06-19
		Jason pose la question : I was wondering how to find the area of a pyramid when you donít know the height of the face but the height of the Pyramids highest point? Penny Nom lui répond.
	A pyramid		2004-05-11
		Quiana pose la question : I am a student and I have the following questions I need to answer for homework: How many sides, vertices, and edges does a pyramid have? Penny Nom lui répond.
	Surface area of a cylinder		2004-04-17
		Kathryn pose la question : How do you find the radius of a cylinder when you are given only the surface area and the height of the cylinder? Penny Nom lui répond.
	Surface area of a sphere		2003-07-23
		Rob pose la question : I have a shere with a circumference of 12 feet. What is the total surface area of the shere in square feet and how did you find it? Penny Nom lui répond.
	8 faces, 12 vertices, and 18 edges		2003-04-22
		Thomas pose la question : I would like to know the proper name for this geometrical solid. It has 8 faces, 12 vertices, and 18 edges? Penny Nom lui répond.
	The surface area of a cube		2003-04-07
		Sarah pose la question : if the volume of a cube is 64 cm, then what's the total surface area? I also want to know how to show my work. Penny Nom lui répond.
	Doubling the size of an object		2003-04-01
		Dave pose la question : If I have a known surface area and volume of an unknown object and I want to double the size of the object, how do I find the new area and volume? Walter Whiteley lui répond.
	Surface area of a sphere		2003-03-11
		Kim pose la question : a sphere has a surface area of 128 pi sq. units. What is its exact radius? formula is 4 pi r2 I believe but how do I get radius Penny Nom lui répond.
	A rectangular prism		2003-01-09
		Julie pose la question : How many faces on a rectangular prism and how many bases? Can the base also be a face and can a face also be a base? Diane Hanson lui répond.
	A triangular prism		2002-04-28
		A student pose la question : Need the formula for the surface area of a triangular prisim? Penny Nom lui répond.
	Intersection of perpendicular cylindrical surfaces		2001-07-31
		Charlie pose la question : Please consider two right circular cylinders, perpendicular one to the other, and of unlike radii in a 3 dimensional Cartesian space with mutually perpendicular x,y,z axes. If one cylinder is centered on the y axis with radius ra, and the other on the z axis with radius rb, then the expression for the first surface would be x2 + z2 = ra2, y = any number. Likewise, the second cylinder's surface would be x2 + y2 = rb2, z = any number. It is my intent to define the curve at the intersection of these two cylindrical surfaces. From sketching the conditions it appears that this intersection resembles an ellipse folded about its minor axis. Chris Fisher lui répond.
	Volume and surface area of a cylinder and a triangular prism		2001-03-31
		Kevin pose la question : I was wondering how do you find the volume and surface area of a cylinder and a triangular prism. Penny Nom lui répond.
	Faces		2001-02-21
		Sandy pose la question : How many faces are there on a sphere? What are the faces of a cone? What is the definition of a "face" of a 3D object? Walter Whiteley lui répond.
	Euler's Formula		2000-11-11
		Denise Roberts pose la question : I'm trying to design a unit (possibly involving a Webquest) on Polyhedra and I cannot find a formula I once used. The formula involved the number of vertices (V), edges (E), and faces (F) of the polyhedra. Walter Whiteley lui répond.
	Surface area of a contact lens		2000-06-06
		Evie Contreras pose la question : I would like to know how to calculate the surface area of a contact lens with a radius of 7mm? I know that the area of a circle is pi R squared, but a contact lens has a dome. Harley Weston lui répond.
	Surface area of a cylinder		2000-04-07
		Jim Campbell pose la question : I am going to cover the outside of a shaft with some material. How do I figure the square inches of the outside surface of the shaft? Shaft is 6" in diameter and 24" long Harley Weston lui répond.
	Lining a cone		2000-04-06
		Jim Campbell pose la question : I am not a student, I am trying to solve a business problem. The question. If I want to put a lining in a chute that is cone shaped, how do I calculate the size steel plate I need to do that. The cone is 10' in diameter at the top and has a 20" hole at the bottom. The total height of the chute is 8'. Harley Weston lui répond.
	Surface area of a sphere		2000-03-22
		Gina Wilkie pose la question : How can I demonstrate to my middle school students the reason for the formula for the surface area of a sphere? Walter Whiteley and Chris Fisher lui répond.
	Surface area of a cone		1999-09-18
		Frothy pose la question : I don't understand how to find the surface area of a cone. The height is 12cm and the radius is 5cm. Walter Whiteley lui répond.
	Platonic Solids Surface Area		1998-12-02
		Rachel Bidwell pose la question : How do you find the surface area of the 5 platonic solids, when they each have a volume of one cubic inch Harley Weston lui répond.
	Surface Area		1997-04-30
		Amber Nobile pose la question : The height of a cylinder is twice the diameter. Express the total surface area as a function of the height h. Harley Weston lui répond.
	Formulae for Surface Area.		1997-04-28
		Gary Millward pose la question : I'm trying to help my son with his Math homework (Grade 10) and he has to find the surface area of a cone and rectangluar pyramid. We have the formulas for the volume of these solids, but can't seem to locate the formulas for surface area. Walter Whiteley lui répond.

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