The length of one side of the triangle is 12 cm, the length of the other side is 2 cm less than the length of the first

univerkov | December 21, 2020 | education

The length of one side of the triangle is 12 cm, the length of the other side is 2 cm less than the length of the first, and the length of the third side is one quarter of the length of the first side. What is the perimeter of the triangle?

Given:
The length of one side of the triangle is 12 cm, the length of the other side is 2 cm less than the length of the first; and the length of the third side is one quarter of the length of the first side.
To find:
What is the perimeter of a triangle?
Decision:
Let’s find first the length of the second throne = 12-2 = 10 cm.
Third side length = 1/4 * 12 = 3 cm.
P = a + b + c
P = 12 + 10 + 3 (cm) = 25 cm
Answer: 25 cm.

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