Chiều dài là:
\(1+\dfrac{3}{4}+1+\dfrac{2}{5}=2+\dfrac{23}{20}=\dfrac{63}{20}\left(m\right)\)
Chu vilà \(\left(\dfrac{63}{20}+\dfrac{7}{4}\right)\cdot2=\dfrac{49}{5}\left(m\right)\)
Diện tích là:
\(\dfrac{63}{20}\cdot\dfrac{7}{4}=\dfrac{441}{80}\left(m^2\right)\)