AB = 27 BC = 27/3 = 9cm
P= AB + BC + AC = 61
27 + 9 + x + 61
36 + x = 61
x (AC) = 61 - 36 = 25
AC = 25 cm
AB = 27 BC = 27/3 = 9cm
P= AB + BC + AC = 61
27 + 9 + x + 61
36 + x = 61
x (AC) = 61 - 36 = 25
AC = 25 cm