# Find the lengths of the sides of a triangle whose perimeter is 40cm, and the sides are 8: 7: 5.

July 28, 2021 | education

| 1. Let’s calculate how many centimeters are in one part of the ratio of the length of the sides of the triangle.

40 / (8 + 7 + 5) = 40/20 = 2 centimeters.

2. Let’s define one side.

2 * 8 = 16 centimeters.

3. Find out the value of another.

2 * 7 = 14 centimeters.

4. Find the length of the third.

2 * 5 = 10 centimeters.

Answer: 16 centimeters, 14 centimeters, 10 centimeters.

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