Răspuns :
P = 2 × l + L (unde l sunt cele doua laturi congruente)
2 × l + 12 = 44
2 × l = 44 - 12 = 32
l = 32/ 2 = 16 cm
2 × l + 12 = 44
2 × l = 44 - 12 = 32
l = 32/ 2 = 16 cm