# Chapter 9 - Section 9.2 - Perimeter - Exercise Set - Page 622: 42

The circumference of the barn is 471 ft.

#### Work Step by Step

Circumference = $\pi$ $\times$ diameter =$\pi$ $\times$ d The diameter is 150ft. Circumference = 3.14 $\times$ 150 = 471 ft.

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