# Chapter 9 - Section 9.1 - Prisms, Area, and Volume - Exercises - Page 412: 27

640 $ft^{3}$

#### Work Step by Step

We have to consider the pentagonal prism as composed by a triangular prism and a parallelepiped Volume = Volume of the triangular prism + Volume of the parallelepiped Volume = $\frac{8 ft \times 2 ft \times 10 ft }{2}$ + (8 ft $\times$ 7 ft $\times$ 10 ft) Volume = 640 $ft^{3}$

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