[Risolto] Geometria area del rettangolo

 

A)

h=20cm

b=3dm=30cm

A=30X20=600cm^2

 

h=1,5dm=15cm

b=75mm=7,5cm

A=15x7,5=112,5cm^2

 

B)

Giusto

 

A=7,2dm^2=720cm^2

h=0,24m=24cm

b=720:24=30cm