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Find the area of a regular pentagon with a side of 6ft. answer nearest tenth

3 answers

See the answer for a nonagon and proceed the same way:

http://www.jiskha.com/display.cgi?id=1337912555

61.9

A=1
45(5+25)a2=1
4·5·(5+2·5)·122≈247.74875in²

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