Question

A circular pool has a radius of 15 feet. How many feet is one lap around the edge of the pool?

47.1 ft

188.4 ft

33.14 ft

94.2 ft

Answer 1

94.2 feet. You plug 15 into the "r" spot in the circumference of a circle formula.
The formula is c=2*pi*r
c=2*pi*15
c=~6.283*15
c=~94.245

Answer 2

In this case, the lap around the edge of the pool would symbolize the circumference. So you can use the circumference formula and the given radius of 15 feet to find the answer.

C=2
`\pi`r
C=2*(3.14)15
C=2*47.1
C=94.2

So the answer/circumference would be 94.2 ft.