Question

The Nygen family wants to put a circular fence around their pool. They want it to be exactly 11 feet from the center of the pool. How many feet of fencing do they need to buy?

Answer 1

We can find this out by using the parameter equation for a circle
r = radius = 11

`p = 2\pi r`

`p = 2*\pi* 11`
p = 69.115
If we round
p = 69.12