# Chapter 9 - Section 9.3 - Area, Volume, and Surface Area - Exercise Set: 7

Area = 2.25$\pi$ The approximation of the area = 2.25 $\times$ 3.14 = 7.065

#### Work Step by Step

The area of a circle is: $\pi$ $\times$ $radius^{2}$ So, Area of the circle = $\pi$ $\times$ $r^{2}$ Since the diameter is 3, the radius is 1.5 (The radius is half the diameter) Area = $\pi$ $\times$ $1.5^{2}$ Area = 2.25$\pi$ The approximation of the area = 2.25 $\times$ 3.14 = 7.065

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