L = 4 · l
A = L · l <=> 64 = 4l^2 <=>
l^2 = 24 <=> l = rad 24 = 2 rad 6
L = 4 · 2 rad 6 = 8 rad 6
P = 2L + 2l = 16 rad 6 + 4 rad 6 = 20 rad 6
P dreptunghi = A pătrat <=> 20 rad 6 = L^2 <=> L =
rad ( 20 rad 6 ) 2 rad 5 · Rad 6 = 2 rad 30
Sper ca te am ajutat!!
