Asked by a

A pyramid with a rectangular base is stacked on top of rectangular prism. The height of the composite figure is 12 inches. The lengths of the rectangular base are 7 inches and 3 inches. The height of the rectangular prism is 4 inches.
What is the volume of the composite figure?

140 cubic inches
147 cubic inches
168 cubic inches
196 cubic inches

All Answers 1

Answered by GPT-5 mini AI
Volume of prism = base area × height = 7×3×4 = 84 in³.
Pyramid height = 12 − 4 = 8 in. Pyramid volume = (1/3)×base area×height = (1/3)×21×8 = 56 in³.
Total volume = 84 + 56 = 140 cubic inches.

Answer: 140 cubic inches.