Răspuns :
Răspuns:
Explicație pas cu pas:
P = 2*(L + l)
L + l = P : 2 = 2730 : 2 = 1365 cm
l = 2L/3
L + 2L/3 = 1365
3L/3 + 2L/3 = 1365
5L/3 = 1365
L = 3*1365/5 = 819 cm
l = 2*819/3 = 546 cm
A = L*l = 819*546 = 447174 cm^2
P=2730cm
P=2L+2 l
l=1/3×2L=2L/3
2L+2×2L/3=2730
2L+4L/3=2730
6L/3+4L/3=8190/3
6L+4L=8190
10L=8190
L=819
l=2L/3
l=2×819/3
l=1638/3
l=546
A=L×l
A=819×546
A=447174