Question

How much fence is needed to enclose a pool with a diameter of 12.5 feet?

Answer 1

39.27 feet.

Explanation:

We are asked to find the fence needed to enclose a pool with a diameter of 12.5 feet.

`\text{Circumference of circle}=\pi D`, where D represents diameter of circle.

`\text{Circumference of circle}=\pi* \text{12.5 feet}`

`\text{Circumference of circle}=39.2699\text{ feet}`

`\text{Circumference of circle}\approx 39.27\text{ feet}`

Therefore, 39.27 feet of fence is needed to enclose the pool.

Answer 2

`12.5 \pi\ ft` or
`39.25\ ft`

Explanation:

we know that

The circumference of a circle is equal to

`C=\pi D`

In this problem we have

`D=12.5\ ft`

substitute

`C=\pi (12.5)=12.5 \pi\ ft`

assume
`\pi =3.14`

`12.5 \pi\ ft=39.25\ ft`