Side AB of triangle ABC is 17 cm, side AC is twice as large as side AB, and side BC is 10 cm

Side AB of triangle ABC is 17 cm, side AC is twice as large as side AB, and side BC is 10 cm less than side AC. Find the perimeter of triangle ABC

Decision:

The formula for the perimeter of a triangle is:

The perimeter of a triangle = the sum of its three sides, that is: AB + AC + BC.

Find the sides of the triangle AC and BC.

AC = AB * 2 = 17 * 2 = 34 cm;

BC = AC – 10 = 34 – 10 = 24 cm;

Perimeter of the triangle = 17 + 34 + 24 = 75 cm.

Answer: the perimeter of the triangle = 75 cm.