Question

The radius of a circle is 6.1 kilometers. What is the circle's circumference?

Use 3.14 for r and round your answer to the nearest hundredth.

Answer 1

Answer: 38.31 km

Explanation:

same concept: since circumference is
`\pi`d, we want d. since d is r*2, d is 6.1*2 or 12.2.

multiply by 3.14 and we get 38.31