$po\text{le}szesciokataEFGHIJ=po\text{le}pros\text{to}kataEGIJ=6m\cdot 4m=24m^2+po\text{le}trojkataGHI\frac{1}{2}\cdot 4m\cdot 2,5m=5m^2+po\text{le}trojkataEGF=1,2\cdot 6m\cdot 3m=9m^2=38m^2$