Question

Which of the following can be used to find the volume of a rectangular prism with length 7.5 centimeters, width 2 centimeters, and height 4.2 centimeters?

Select all the apply

A. V = 15 + 4.2

B. V = 15 x 4.2 x 4.2

C. V = 15 x 4.2

D. V = 7.5 x 2 x 4.2

E. V = (7.5 + 2) x 4.2

Answer 1

C. V = 15 x 4.2

D. V = 7.5 x 2 x 4.2

Answer 2

• C. V = 15 x 4.2
• D. V = 7.5 x 2 x 4.2

Explanation:

The volume is the product of the three dimensions, so can be figured as ...

7.5 × 2 × 4.2 . . . . choice D

Carrying out the first multiplication, this will be equivalent to ...

15 × 4.2 . . . . . . . . choice C