Question

A circular pool has a diameter of 20 feet. You want to purchase a cover for the pool. What area needs to be covered?

Answer 1

A=2
`\pi`r
`r^(2)`
r=D/2 = 20feet/2 = 10 feet

Therefore,
A=2
`\pi`
`(10)^(2)`
A=200
`\pi`