Question

A cathedral has a large, circular stained-glass window. A visitor measures the window and calculates that it has an area of 50.24 square feet. What is the window's circumference?

Use 3.14 for ​.

Answer 1

25.12

Explanation:

1. Use the formula for the area of a circle to find the radius

`A=\pi r^2`

`50.24=\pi r^2`

`16=r^2`

`√(16) =r`

`4=r`

2. Use this value to find the circumference

`C=2\pi r`

`C=2\pi 4`

`C=2(12.56)`

`C=25.12`

Answer 2

25.133

Explanation:

area is pi*r^2. divide area by 3.14 and then sqrt to find radius. 6.28*radius= circumference, so 6.28*4=25.133