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