Răspuns :
P = 3L =12
L = 12:3 = 4
Avem formula inaltimii intr-un triunghi echilateral:
H = (√3/2) × L = (√3/2) × 4 = 2√3 cm
L = 12:3 = 4
Avem formula inaltimii intr-un triunghi echilateral:
H = (√3/2) × L = (√3/2) × 4 = 2√3 cm