Question

aflati perimetrul unui dreptunghi care are lungimea de trei ori latimea iar latimea de 6cm

Answer 1

Lungimea |-----|-----|-----|
latimea     |-----|                      

latimea = 6 cm
Lungimea = 6 x 3 = 18 cm
P = L+l+L+l
P = 18 + 6 + 18 +6
P = 24 +24
P = 48 cm.

Answer 2

l=6cm  L=6cm*3=18cm   perimetrul=(18 cm+6cm)*2=24cm*2=48cm