Question

Find the volume of a rectangular prism if the length is 2x, the width is 4x2, and the height is 2x2 + x + 7. Use the formula

V = l ⋅ w ⋅ h, where l is length, w is width, and h is height, to find the volume.

8x6 + 8x4 + 56x3
8x5 + 8x4 + 56x3
16x6 + 8x4 + 56x3
16x5 + 8x4 + 56x3

Answer 1

`V \\ = 2x * {4x}^(2) * ({2x}^(2) + x + 7) \\ = {8x}^(3) ( {2x}^(2) + x + 7) \\ = {16x}^(5) + {8x}^(4) + {56x}^(3)`

Answer is the last option.

Hope this helps. - M