Question

A circle has an area of 127 cm?. Find its circumference. (Round your answer to the
nearest tenth.

Answer 1

≈39.95

A Area  

127

d

r

r

r

d

d

C

A

Using the formulas

A=πr2

C=2πr

Solving forC

C=2πA=2·π·127≈39.94908

Answer 2

Answer:

39.95

Step-by-step explanation: