Question

What is the radius of a circle thats 16 units?

Answer 1

r =8

Explanation:

Therefore, C = π d .

We know that the circumference, C , is 16 π , so we can say that:

16 π = π d

We can divide both sides by π to see that 16 = d .

We now know that the diameter of the circle is 16 .

We also know that the diameter has twice the length of the radius.

In equation form: 2 r = d

2 r = 16

r = 8

Answer 2

2.54648ft.

Explanation:

r=8/
`\pi`(ft.) therefore, the radius of the circle when its circumference is 16 feet is r≈2.54648ft.