Question

Exercitiul 5 va rogggggggg dau coroana hihi

Answer 1

P = 3 x l

P = l + 8

l + 8 = 3l

8 = 3l - l

8 = 2l

l = 8 : 2

l = 4 cm lungimea unei laturi

P = 4 x 3 = 12 cm ( 4 + 4 + 4 = 12 )

12 = 4 + 8

Answer 2

P = perimetru

L = latura triunghi

P = 3 × L dar P = L + 8

3L = L + 8

3L - L = 8

2L = 8

L = 8:2 =

L = 4

P = 3 x 4 = 12 cm