tolong dibantu hasil dari soal di atas...

keliling=2 (p+l)
56m=2 (p+l)
(p+l) =56m/2
(p+l) =28m

panjang:
=9/ (9+5) * 28cm
=9/14*28m
=9*2m
=18m

lebar
=5/ (9+5) * 28m
=5/14*28m
=5*2m
=10 m

luas
=p*l
=18m*10m
=180m^2