The perimeter of an isosceles triangle is 66 cm, the lateral side is 5 times the base. Find the side of the triangle.

univerkov | May 30, 2021 | education

1. If the base is x centimeters, then the side of the triangle is x * 5 = 5x centimeters.

2. Let’s make an equation.

x + 5x * 2 = 66;

11x = 66;

x = 66/11 = 6;

x = 6;

3. The base is x = 6 centimeters.

4. Determine the length of the side.

x * 5 = 6 * 5 = 30 centimeters.

Answer: 6 centimeters, 30 centimeters.

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