SOLUTION: Find the area of a circle whose circumference=21.4km.round your answer to nearest tenth

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Question 801173: Find the area of a circle whose circumference=21.4km.round your answer to nearest tenth
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
21.4/3.14=6.82 diameter
A=3.14*r^2
A=3.14*3.41^2
A=36.5 sq km