Question

Suppose the area of a circle is 254.4696 square inches. Whats the radius of the circle? Use pie=3.1416. A. 18 in B. 81 in. C. 9 in D. 9 in 2

Answer 1

Answer:

radius = 9 inches

Step-by-step explanation:

$Area = \pi r^{2}$

r = radius

Area = 254.4696 square inches

so we have:

$r^{2} = \frac{A}{\pi} \\\\r = \sqrt{\frac{A}{\pi}} \\\\r = \sqrt{\frac{254.4696}{3.1416}} \\\\r = \sqrt{81}$

so we have: r = 9 inches