I need help with a math problem

Mathematics
Tutor: None Selected Time limit: 1 Day

Nov 12th, 2015

Thank you for the opportunity to help you with your question!

We identify this shape of this figure as a rectangular prism.

Recall the formula for the volume of a prism = V = (base area)*(height)

With base area = (length * width)

We want the length of this figure.  We know height = 3 ft. width = 7 ft.  Volume = 472.5 cubic ft.

472.5 = length * 3 * 7

472.5 = 21 * length

472.5 / 21 = length

length = 22.5 feet.

Answer choice D.) 22.5 feet.

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Nov 12th, 2015

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