Question

Angela goes to the garden. There is a fountain. A circular fountain with a 10m radius lies alone in the center of a circular park with a 200 m radius. Calculate the total walking area available to the park visitors

Answer 1

Fountain
A = pi * 10^2
A = 100pi

Garden
A = pi * 200^2
A = 40,000pi

40,000pi - 100pi = 39,900 m^2