Use the formula for the area of a regular polygon with nn sides with length ss and apothem aa:

\(\displaystyle{A}=\frac{{1}}{{2}}{a}{n}{s}\)

Substitute n=10, a=10 m, and s=6.5 m:

\(\displaystyle{A}=\frac{{1}}{{2}}{\left({10}\right)}{\left({10}\right)}{\left({6.5}\right)}\)

A=325

So, the area is 325 m^2.

\(\displaystyle{A}=\frac{{1}}{{2}}{a}{n}{s}\)

Substitute n=10, a=10 m, and s=6.5 m:

\(\displaystyle{A}=\frac{{1}}{{2}}{\left({10}\right)}{\left({10}\right)}{\left({6.5}\right)}\)

A=325

So, the area is 325 m^2.