Answer:
4.5 inches = r
Step-by-step explanation:
The area of a circle is given by
A = pi r^2
62.9 = pi r^2
We can approximate pi by 3.14
62.9 = 3.14 r^2
divide each side by 3.14
62.9 /3.14 = 3.14 / 3.14 r^2
20.03184713 = r^2
Take the square root of each side
sqrt(20.03184713) = sqrt(r^2)
4.475695156 =r
Rounding to the nearest tenth
4.5 inches = r
