The perimeter of a triangle is 17.5 cm. The length of its first side is 0.4 of its perimeter.

| June 27, 2021 | education

The perimeter of a triangle is 17.5 cm. The length of its first side is 0.4 of its perimeter. The length of the second side is equal to 0.8 of the length of the first side. Find the length of the third side of the triangle.

To solve this problem, we first find the length of the first side.

Since we know that it is 0.4 of the perimeter, we get:

0.4 * 17.5 = 7 cm.

Find the length of the second side.

To do this, multiply the length of the first side by 0.8.

We get:

7 * 0.8 = 5.6 cm.

Find the total length of the first and second sides.

7 + 5.6 = 12.6 cm.

Find the length of the third side.

To do this, subtract the sum of the first two sides from the perimeter of the triangle.

We get:

17.5 – 12.6 = 4.9 cm.

Answer: The length of the third side of the triangle is 4.9 cm.



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