To find the length of AC, we need to use the perimeter formula for a triangle. The perimeter of a triangle is equal to the sum of the lengths of its three sides.
Given: AB = BC = 15 cm AB + BC + AC = Perimeter 15 + 15 + AC = 42 30 + AC = 42 AC = 42 - 30 AC = 12 cm
To find the length of AC, we need to use the perimeter formula for a triangle. The perimeter of a triangle is equal to the sum of the lengths of its three sides.
Given:
AB = BC = 15 cm
AB + BC + AC = Perimeter
15 + 15 + AC = 42
30 + AC = 42
AC = 42 - 30
AC = 12 cm
Therefore, the length of AC is 12 cm.