Question

I am installing a 1 yard-wide walk around circular swimming pool that is 21 ft in diameter. What is the area of the walk?

Answer 1

Adding a 1-yard walkway increases the circle to `21+3+3=27` feet in diameter

Explanation:

Area of big circle minus small circle `=pi((27/2)^2-(21/2)^2)`

= Area of walkway `=72pi~~226.2` sq ft

hope that helped