Răspuns :
4 dm=40 cm
Aromb=d₁×d₂/2=30×40/2=600 cm²
Aromb=L×h=25×h=600 cm² h=600/25=24 cm
Aromb=d₁×d₂/2=30×40/2=600 cm²
Aromb=L×h=25×h=600 cm² h=600/25=24 cm
A=D*d supra 2 sau h*b
A=30cm ori 40 cm supra 2
A=1200 supra 2
A =600 cm patrati
A =60dm patrati
A=h*b
h=A supra b
h=600cm:25cm
h=24 cm
A=30cm ori 40 cm supra 2
A=1200 supra 2
A =600 cm patrati
A =60dm patrati
A=h*b
h=A supra b
h=600cm:25cm
h=24 cm