# Chapter 11 - Surface Area and Volume - 11-5 Volumes of Pyramids and Cones - Practice and Problem-Solving Exercises - Page 731: 23

123 inches cubed

#### Work Step by Step

We use the equation for the volume of a square pyramid to solve: Volume of a square pyramid = $\frac{1}{3} \times base\times base\times height$ V = $\frac{1}{3} \times 7\times 7\times7.5$ V $\approx$ 123 inches cubed

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