Volume of a rectangular prism equals the product of its base area and its height. If the base area is bh and the height is H, the volume is

• A. base area times height
• B. bh
• C. height
• D. bh times height

Answer: (A)

The key idea is that volume is found by multiplying the area of the base by the height. For a rectangular prism, the base area is the product of the base dimensions, here bh. If the height is H, the volume becomes (bh) × H. Saying “base area times height” directly matches this relationship and communicates the formula clearly. The other options either give only one factor (base area or height) or state the product in a more cumbersome way, even though bh times height would compute the same value, the most direct description is base area times height.