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	The volume of a frustum		2019-06-24
		Abdulganiy pose la question : A right pyramid on a base 10cm square is 15m high a)find the volume of the pyramid b)if the top 6m of the pyramid is removed what is the volume of the remaining frustum? Penny Nom lui répond.
	The volume of a truncated rectangular pyramidal pond		2016-05-13
		Paul pose la question : How do you calculate a partially filled truncated rectangular pyramid if you always know the bottom rectangle, the maximum height top rectangle perimeter, but have a varying height. Similar to filling up a pond you know the current height and dimensions at the max rectangle how do you calculate it half full i.e. 10x30 outside perimeter with a 2x8 base and a max height of 6ft how do you calculate it at 3ft without re-measuring the top perimeter. Thanks, Paul Harley Weston lui répond.
	A frustum of a pyramid with a square base		2014-04-18
		tuba pose la question : a pyramid has a base of 10 m and is 15 m high.what is the volume? if 6m is removed from top what is the volume of the remaining frustum? Penny Nom lui répond.
	The volume of a frustum		2014-02-02
		mike pose la question : volume of frustum R23", r 18", h 16" Penny Nom lui répond.
	A frustum		2013-10-12
		Lily pose la question : A cone of height 6in. and radius of base 4in. has its top cut off by a plane parallel to its base and 4in from it. Find the volume of the remaining frustum. I have worked out the volume of the entire cone but I don't know how to work out the radius of the top of the frustum. Thanks Penny Nom lui répond.
	A label to cover a plastic cup		2012-10-23
		Kevin pose la question : I'm trying to make a label to cover the entire outer area or a plastic cup. I know there must be a way to figure out the dimensions needed, but I can't seem to figure it out. The circumference of the bottom of the cup is 21.4cm and the circumference at the top of the cup is 29.8cm. The cup is 14.5cm tall. What should the height of the arc from the plane connecting the two ends of the 21.4cm arc. I attached a diagram where x is the value I'm looking for. I'm guessing there is some simple relationship between the length of a line and the arc needed to turn that line into a perfect circle, but I don't know what it is. Can you figure this out and share it with me? Thanks. -Kevin Penny Nom lui répond.
	The volume of a frustum of a cone		2011-12-24
		CV pose la question : If I know the height, taper, and volume of a frustum cone, what are its Radii? Calculating frustum cone volume is straight forward. v=Pi/3*h*(R*R+r*r+R*r) where; v=volume; h=frustum height; R=major radius; r=minor radius; Pi=3.1415926; t=taper, ('slant angle' where t=0 is a disk) Here is the tricky part. Knowing 'h', 't', & 'v'; Calculate one or both of 'R' & 'r'. Specifically, what is the formula for 'R=' or 'r='? Penny Nom lui répond.
	More on a truncated cone		2010-05-28
		Mike pose la question : Question from Mike, a parent: I was reviewing this question and answer: http://mathcentral.uregina.ca/QQ/database/QQ.02.06/phil1.html But I have trouble with this part: Now if we express the radius of the inside circle as r and the outside circle's radius is R, then this means r/R is 911/1728. But earlier we said that the outside radius R is simply w more than the inside radius r, so R = r + 282. That means that r/R = r/(r + 282). Now we can simply solve the equation for r: r/(r+282) = 911/1728 This means r = 314 mm (with rounding). Can I get more detail on the method to solve for r? Thank you, Mike Penny Nom lui répond.
	The volume of a frusta of a hexagonal based pyramid		2010-03-04
		sarah pose la question : Volume of a frusta of a hexagonal based pyramid Penny Nom lui répond.
	The volume of a frustum		2009-12-29
		dave pose la question : I have a frustum top 1.7r bottom .55r and 2.14 h I have to calculate cement in a silo every week. I am not very good at maths but i have been adding the top and bottom to get an average so as to turn it into a cylinder and i come up with 8.5m3 I know that the correct volume is 9.24 m3. Can you tell me why getting an average width on the top and bottom of a frustum doesn't work. Thank you. Chris Fisher lui répond.
	Belled-out pier		2008-01-28
		Gina pose la question : I need to know how to find the total yards needed to fill a concrete pier that is 54"/ 108" and 26' deep. That is...54" @ the top of the pier belled to 108" @ the bottom...26' deep. Stephen La Rocque lui répond.
	The volume of a frustum of a pyramid		2007-01-17
		Sam pose la question : Find the volume of a frustum of a pyramid with square base of side b, square top of side a, and height h. Penny Nom lui répond.
	A Frustum		1999-03-29
		Monica Armour pose la question : What do you call a square pyramid that has had the top chopped off? Chris Fisher and Jack LeSage lui répond.

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