Question

The pool at a park is circular. You want to find the equation of the circle that is the boundary of the pool. Find the equation if the area of the pool is 500 square feet and (0, 0) represents the center of the pool.

Answer 1

500=.5*r^2*2pi
500=r^2*pi
500/pi=r^2
r=(500/pi)^(1/2)