Question

If the area of a circle is 74.2 ft squared, what would the circumference of the circle be?

Answer 1

`C=30.536\ ft`

Explanation:

Step 1: Determine the radius

`A = \pi *r^2`

`74.2\ ft^2=\pi *r^2`

`(74.2\ ft^2)/(\pi )=(\pi *r^2)/(\pi )`

`23.619\ ft^2=r^2`

`√(23.619\ ft^2)=√(r^2)`

`4.8599\ ft=r`

Step 2: Determine the circumference

`C=2*\pi *r`

`C=2*\pi *4.8599\ ft`

`C=30.536\ ft`

Answer:
`C=30.536\ ft`