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

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

Substitute n=10, a=26 m, and s=16.9 m:

\(\displaystyle{A}=\frac{{1}}{{2}}{\left({26}\right)}{\left({10}\right)}{\left({16.9}\right)}\)

A=2197

So, the area is 2197 m^2.

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

Substitute n=10, a=26 m, and s=16.9 m:

\(\displaystyle{A}=\frac{{1}}{{2}}{\left({26}\right)}{\left({10}\right)}{\left({16.9}\right)}\)

A=2197

So, the area is 2197 m^2.