Truncated pyramids would have volumes found in a manner identical to the truncated cone. And, like the cone, the key will be similar right triangles. A monument has the shape of the truncated pyramid shown
below that has a square base and square top with dimensions shown. Its height is 5 feet. The extended
version is shown beside it along with a diagram for use with the similar triangles.

Determine the volume of the monument to the nearest tenth of a cubic foot.

If the monument is made from marble that weighs 170 pounds per cubic foot, how many tons is this monument, to the nearest tenth of a ton? If you don't remember how many pounds are in a ton, do an internet search.