Question

The surface area of the top surface of the water in a circular swimming pool is about 20 square feet. Estimate the radius of the pool, to the nearest foot.
A.14feet B.8feet C.11feet D.10feet

Answer 1

Remember the area formula: A = pi(r^2)

Answer 2

let x be the radius.
(pi) (x^2) = 20
x^2 = 6.366197724
x = 2.52 feet or x=-2.52 feet (rejected)
@@.. not from the choice you gave us