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4 September, 23:45

A regular pentagon has an apothem measuring 3 cm and a perimeter of 21.8 cm. What is the area of the pentagon, rounded to the nearest tenth? 13.8 cm2 17.3 cm2 32.7 cm2 69.0 cm2

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  1. 5 September, 00:48
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    The area of a regular polygon is given by

    A = (1/2) Pa

    where P is the perimeter, and "a" is the apothem.

    For your numbers, the area is

    A = (1/2) (21.8 cm) (3 cm) = 32.7 cm²
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