In triangle ABC, the sides of AC and BC are equal, AC = 15cm 6mm. the AB side is 6cm 8mm smaller

In triangle ABC, the sides of AC and BC are equal, AC = 15cm 6mm. the AB side is 6cm 8mm smaller than the BC side. Calculation of the perimeter of the triangle ABC.

The perimeter is the sum of the lengths of all sides, therefore, to find the perimeter of a triangle, you need to know all three of its sides.

Since AC and BC are equal, BC = 15 cm 6 mm.

To find the AB side, subtract 6 cm 8 mm from the BC length. For convenience, let’s translate the values into millimeters:

15 cm 6 mm = 156 mm.

6 cm 8 mm = 68 mm.

156 – 68 = 88 mm. This is the AB side.

Now add all the sides to find the perimeter:

156 + 156 + 88 = 400 mm = 40 cm.