## Elementary Geometry for College Students (6th Edition)

$\approx$ 7 cm
Area of circle = 154 $cm^{2}$ The area A of a circle whose radius has length r is given by A = $\pi r^{2}$ 154 =$\pi r^{2}$ $r^{2}$ = $\frac{154}{3.14}$ r = $\sqrt \frac{154}{3.14}$ = 7.001 cm $\approx$ 7 cm