Răspuns :
L=0,24m=0,24*10dm=2,4dm
l=L:2
l=0,24m:2
l=0,12m=0,12*10dm=1,2dm
A=L*l
A=2,4m*1,2dm
A=2,88dm²(aria dreptunghiului)
l=L:2
l=0,24m:2
l=0,12m=0,12*10dm=1,2dm
A=L*l
A=2,4m*1,2dm
A=2,88dm²(aria dreptunghiului)