# Chapter 10 - Geometry - 10.4 Area and Circumference - Exercise Set 10.4: 17

C = 12$\pi$ $\approx$37.7 yd A = 36$\pi$ $yd^{2}$ $\approx$ 113.1 $yd^{2}$

#### Work Step by Step

Given d = 12 yd Formula for circumference of a circle: C = $\pi$d = $\pi$ x 12 = 12$\pi$ = 37.7 yd Formula for Area of a circle: A = $\pi$ $r^{2}$ =$\pi$ $6^{2}$ = 36$\pi$ $yd^{2}$ =113.1 $yd^{2}$

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