Find the area of a regular decagon with an apothem of 5 meters and a side length of 3.25 meters

The area is 81.25 m².

We find the area using the formula
A = 0.5*p*a, where p is the perimeter and a is the apothem.

Since this is a regular polygon, the perimeter is given by 10s, where s is the side length.  This gives us:

A = 0.5(10s)(a) = 0.5(10*3.25)(5) = 81.25

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