PrettyBoyKitten
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Help!!! pick one awnser out of the four in the picture!!! the dark one is not the awnser! Calculate the area of the regular pentagon below:

A regular pentagon with side length of 11.8 inches and dotted line from center to middle of side of 8.1 inches.

Help pick one awnser out of the four in the picture the dark one is not the awnser Calculate the area of the regular pentagon below A regular pentagon with side class=

Respuesta :

sqdancefan
The dark one is double the correct answer. You forgot the factor of 1/2.

A = (1/2)Pa . . . . . P is perimeter (5*11.8), a is apothem (8.1)

A = (1/2)*5*11.8*8.1 = 238.95 . . . . square inches
clschmeichel
The answer is B 238.95 square inches

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