395,664 views
4 votes
4 votes
The circumference of a circle is 21pi what is the area?

User Driss NEJJAR
by
3.0k points

1 Answer

18 votes
18 votes

Answer:

346.36

Explanation:

C=piD

so the21 is theD

A=piR^2

R=D/2(1/2D)

A=22/7×21/2^2=346.36

User Erik Ringsmuth
by
3.1k points
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