The perimeter of the triangle is 40 cm. The length of the first side of the triangle is 8 cm.

| March 10, 2021 | education

The perimeter of the triangle is 40 cm. The length of the first side of the triangle is 8 cm. The length of the second side is 3 times longer, find the length of the third side.

We are given the perimeter of the triangle. The perimeter is the sum of the lengths of all sides of a given shape. One of its sides is 8. The length of the second side is 3 times longer, which means that the second side is 24 cm. Let’s designate the third side of the triangle as at.
Let’s make the equation:
8 + 25 + b = 40;
Let’s simplify this equation:
33 + b = 40;
Let’s transfer the known numbers to the other side:
h = 7;
This means that the third side of this triangle is 7 centimeters.
Answer: the first side is 8 cm, the second side is 24 cm, the third side is 7 cm.



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