The perimeter of the triangle is 68 cm. One side is 20 cm, which is 7 cm less than the other
| August 16, 2021 | education
The perimeter of the triangle is 68 cm. One side is 20 cm, which is 7 cm less than the other side. Find the third side of the triangle.
To solve this problem, remember that the perimeter of a triangle is equal to the sum of the lengths of all its three sides. Let’s calculate what is the second side of the triangle.
20 + 7 = 27 centimeters.
Knowing. that the two sides are 20 centimeters and 27 centimeters, and the perimeter is 68 centimeters, we calculate the length of the third side.
68 – (20 + 27) = 68 – 47 = 21 centimeters.
Answer: 21 centimeters.
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