Question

Akiko is making a pizza. The radius of the pizza is 19 inches. What is the circumference of the pizza (use 3.14 for pi and round to nearest tenth)?

Answer 1

≈119.3

Explanation:

The area for circumference is as follows:

`C = 2\pi r\\or\\C = d\pi`

The above equations mean the same thing, because the diameter is just 2 times the radius.

Anyhow, we insert this value into the equation...

`C = 2\pi(19)\\C = 38(3.14)\\C = 119.32\\`

This rounds to:

≈119.3