Question

What is the circumference of a circle with a radius of 7.9 inches? Use 3.14 for pi. Enter your answer as a decimal in the box. in.​

Answer 1

CIRCUMFERENCE OF A CIRCLE CAN BE FOUND USING THE FORMULA :

`c = 2\pi \: r \\ \\ or \\ c = \pi \: d`

BUT NOTE d WHICH IS THE DIAMETER IS TWICE THE RADIUS r MEANING IF YOU WERE TO USE THE FORMULA

`c = \pi \: d`

YOU WOULD USE

`d = 2(7.9) \\ d = 15.8 \\ c = (3.14)15.8) \\ c = 49.612 \: \: inches`

NOTE THE TWO FORMULAS RETURNED THE RIGHT CORRECT ANSWER

GOODLUCK!

ALL THESE FORMULAS CAN LEAD YOU TO THE CORRECT ANSWER

`c = 2(3.14)(7.9) \\ c = 49.612 \: inches`

Answer 2

49.64in

Explanation: