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perimetrul unui dreptunghi este 152 dm.daca lungimea are 630 cm,afla latimea in mm.

Răspuns :

152dm=15 200 mm
630cm=6300mm
6300×2=12600
15200-12600=2600
lungime=2600
latime=2600
l=(P-2xL):2
l=(1520cm-630cmx2):2=(1520cm-1260cm):2=260cm:2=130cm
latimea=130cm=1300mm