Find the perimeter of triangles ABC if AB = 5cm, BC = 1dm 1cm AC = 95mm.

univerkov | April 9, 2021 | education

Let’s convert all units of measurement to one, for example, to centimeters.
The first side of the triangle is a = 5 cm.
The second side of the triangle is b = 1 dm 1 cm = 11 cm.
The third side of the triangle c = 95 mm = 9.5 cm.
As you know, the perimeter of a triangle is the sum of all sides, and is calculated using the following formula: P = a + b + c.

Substitute all the known values of the sides of the triangle in the formula and find the perimeter: P = 5 + 11 + 9.5 = 25.5 cm.
Answer: the perimeter of a triangle given by the lengths of its sides is 25.5 cm.

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