Va rog dau coroana
am nevoie de raspuns

Răspuns:
a)
A=L×l
108=L×3/4×L
108=3L^2/4
3L^2=432
L^2=432÷3=144
L=12 m
108=12×l
l=108/12=9 m
b) P dreptunghi=2L+2l=24+18=42 m
P patrat=4l=42
l patrat=42÷4=42/4=21/2
c) A patrat=1/3×108=108/3=36 m^2
l patrat=6 m