Question

12. Find the radius of a circle with a
circumference of 457 centimeters.

Answer 1

Explanation:

`Circumference=d\pi\\Circumference=2r\pi`

Since we need to find the radius, then we will rearrange the second formula.

`Radius=(C)/(2\pi )`

`Radius=(457)/(2\pi )`

`Radius=(457)/(6.28)`

`Radius= 72.8 (rounded)`

So, the radius of a circle that has a circumference of 457 is about 72.8 cm