# What is the radius of a circle whose area is 154 square centimeters?

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Dec 14, 2016

$7.00$

#### Explanation:

Area of a circle $A = \pi {r}^{2}$, where r is the radius.

Given $A = 154$,
$\implies 154 = \pi \cdot {r}^{2}$
$\implies {r}^{2} = \frac{154}{\pi} = 49.02$

$\implies r = \sqrt{49.02} = 7.00$

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