If it is the frustum of a pyramid: The volume of a pyramid (with a square base) is: Length_of_base * Width_of_base * Height * 1/3 To get the volume of the frustum, subtract the volume of the top part (also a pyramid) from the full volume.
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frustum of a cone
the formula is
(h*pi)/3*(r1^2+r2^2+r1*r2)
this is where h = height r1= top radius r2=bottom radius
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A frustum. Specifically, a frustum of a triangular pyramid -- as one could also have a frustum of a cone, square pyramid, etc.
You find the length and height of the shape, them you find the volume
You cannot find the volume of a square. You can find the volume of a cube, which is finding the length of one edge of the cube and taking that to the third power, or cubing it.
The volume of a sphere is 4 / 3 * pi * r3
use the formula 4/3*π*radius3 to find the volume of a sphere.