Question

Suppose the radius of a circle is 16. what isSuppose the radius of a circle is 16. what is its circumference its circumference

Answer 1

32
`\pi` or 100.48

Explanation:

To find the Circumference of a circle you have to use the equation

2 R
`\pi` or D
`\pi`

With R representing the radius and D representing the diameter

Since the radius is 16, the diameter would be 32

So in terms of pi the answer is 32
`\pi`

If the answer is not in terms of pi the answer would be 32 × 3.14

(3.14 is the estimated number for pi)

32 × 3.14 = 100.48 (and whatever measurement you are using)

For example 100.48 in. or 100.48 cm.

Answer 2

C = 32 * pi or approximately 100.48

Explanation:

The formula for circumference is

C = 2*pi*r

We know the radius is 16

C = 2*pi*16

C = 32 pi

or if we approximate pi as 3.14

C = 32 *3.14

= 100.48