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Find the area of a circle whose circumference is 18pi diameter.

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Find the area of a circle whose circumference is 18pi diameter.
asked Mar 18, 2014 in GEOMETRY by dkinz Apprentice
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1 Answer

+1 vote

Circumference (2πr) = 18π

Cancel common terms.

r = 9

Area of a circle is π r2

= 3.14 * 9 * 9

=  254.34 (units)2

Area of a circle is 254.34 (units)2

answered Mar 18, 2014 by dozey Mentor

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