One side of the triangle is 60 cm, the other is 3 times smaller than the first, and the third side is 27 cm

| May 9, 2021 | education

One side of the triangle is 60 cm, the other is 3 times smaller than the first, and the third side is 27 cm less than the sum of the first and second sides. What is the perimeter of the triangle?

1) Find the length of the second side of the triangle.

Divide the known length of the first side by 3.

Will be:

60/3 = 20 cm.

2) Determine the sum of the lengths of the first and second sides of the triangle.

Let’s summarize their values.

60 + 20 = 80 cm.

3) Find how many cm is the length of the third side.

We subtract the difference from the sum of the lengths of the 1st and 2nd sides.

Will be:

80 – 27 = 53 cm.

4) Determine the perimeter of the triangle.

To do this, we sum up all the sides of the figure.

As a result, we get:

60 + 20 + 53 = 80 + 53 = 133 cm.

Answer: The perimeter is 133 cm.



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