What is the volume of a rectangular prism with dimensions 7 cm by 3 cm by 2 cm?

• A. 36 cm^3
• B. 42 cm^3
• C. 24 cm^3
• D. 70 cm^3

Answer: (B)

Volume is found by multiplying the three side lengths of a rectangular prism. With dimensions 7 cm, 3 cm, and 2 cm, multiply step by step: 7 × 3 = 21, then 21 × 2 = 42. So the volume is 42 cubic centimeters. The other numbers would come from using different combinations that don’t use all three given dimensions together, so they don’t match the actual size of this prism.