Question

The diameter of a tree trunk is 23 inches. What is the circumference?

Answer 1

The Image is uploaded.

Answer 2

72.26

Explanation:

Circumference formula is C=2
`\pi`r

Radius is 1/2 the diameter so, 23/2 = 11.5

11.5 will be your radius.

Now, plug your radius into your formula: 2 x
`\pi` x 11.5

and your answer will be approximately 72.26.