Question

O Podea sub forma de dreptunghi ABCD cu latura de 2 ori mai mica decat L si perimetru=36cm. a) calculati suprafata ABCD. ....................am nevoie urgenttttttttttttttttttttttttttttttttttt macar punctul a va rogggggggggggggg

Answer 1

l=L:2
P=36 cm
P=2(L+l)
36=2(L+L:2)
36=2L+L
3L=36
L=36:3
L=12 cm
l=L:2
l=12:2
l=6 cm
A=L×l
A=12×6
A=72 cm^2

Answer 2

P=36

P=2×(L+l)

36=2 (L+L:2)

36=2L+L

3L=36

L=36:3

L=12 cm

l=L:2

l=12:2

l=6 cm

A=L×l

A=12×6

A=72 cm^2

Sper ca te-am ajutat