find the area of all sides of rectangle. Then multiply by the number of similar sides by the area. last add all of your answers together.

\(\displaystyle{6}\times{3}={18}\)

\(\displaystyle{18}\times{2}={36}\)

\(\displaystyle{16}\times{3}={48}\)

\(\displaystyle{48}\times{2}={96}\)

\(\displaystyle{16}\times{6}={96}\)

\(\displaystyle{96}\times{2}={192}\)

\(\displaystyle{36}+{96}+{192}={324}{m}\)

\(\displaystyle{6}\times{3}={18}\)

\(\displaystyle{18}\times{2}={36}\)

\(\displaystyle{16}\times{3}={48}\)

\(\displaystyle{48}\times{2}={96}\)

\(\displaystyle{16}\times{6}={96}\)

\(\displaystyle{96}\times{2}={192}\)

\(\displaystyle{36}+{96}+{192}={324}{m}\)