Răspuns :
Ad=Ap= [tex] l^{2} [/tex] = [tex] 18^{2} [/tex] =324 cm patrati
Ld=27
Ad=l*L
324=l*27
l=324:27
l=12 cm
Pd=2(l+L)
Pd=2(12+27)
Pd=2*39
Pd=78 cm
Pd=perimetru dreptunghi
l=latimea
L=lungimea
Ad=aria dreptunghi
Ap=aria patrat
Ld=lungime dreptunghi
Ld=27
Ad=l*L
324=l*27
l=324:27
l=12 cm
Pd=2(l+L)
Pd=2(12+27)
Pd=2*39
Pd=78 cm
Pd=perimetru dreptunghi
l=latimea
L=lungimea
Ad=aria dreptunghi
Ap=aria patrat
Ld=lungime dreptunghi
A dr = A patr. ; A patr = 18*18=324
Adr =324
324 = L *l
324 =27 * l
l =324 :27
l =12
P = 2L +2 l
P = 2*27 +2*12
P =78 cm
Adr =324
324 = L *l
324 =27 * l
l =324 :27
l =12
P = 2L +2 l
P = 2*27 +2*12
P =78 cm