Find the area of a regular 11-gon with side length 8 cm

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1 Answer

regular polygon with 11 sides, eech side leng=8

polygon area=(n/4)*side*side*tan( beta), with alfa=306 deg/n & beta=(180-alfa)/2

for 11 sides, alfa=32.73 deg, beta=73.64 deg, tan(beta)=3.4056872389

area=599.400954
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