Question

Sasha's grandmother loves to travel. She sends Sasha postcards from all around the world. Sasha keeps the postcards in a special box. The box has a square base and a square pyramid for a lid.What is the combined volume inside the box and lid?

Answer 1

To find the combined volume, you will need to find the volume of the square pyramid and the rectangular prism.

V = 1/3 Bh (volume of pyramid); B is the area of the base.
1/3 x 8 x 8 x 3
V = 64 cubic inches

V = Bh (volume of prism)
8 x 8 x 4
V = 256 cubic inches

256 cubic inches + 64 cubic inches = 320 cubic inches.

The entire volume is 320 cubic inches.