Question

What is the radius of a circle with an area of 64 square feet

Answer 1

r = +(8 ft) / (√π)

Explanation:

Formula for the area of a circle: A = πr²

Here, 64 ft^2 = πr²

Solving for r², we get

64 ft^2

r² = ---------------

π

so that r is the positive square root of this expression:

64 ft^2

r = +sqrt ( -------------- )

π

= +(8 ft) / (√π)