![]() Write the perimeter along with its units. Since this is a scalene triangle, we use the formula, Perimeter = a + b + c. Step 2: Use the appropriate formula and add the sides to get the perimeter. Step 1: Check if all three sides of the triangle are known.ĪB = 6 inches, BC = 8 inches, AC = 10 inches Let us see how to find the perimeter of a triangle using an example.Įxample: Find the perimeter of △ABC having the following dimensions: AB = 6 inches, BC = 8 inches, AC = 10 inches. ![]() Step 3: Give the answer along with the unit.Step 2: Calculate the sum of all the sides.Step 1: Note the measurements of all the sides of a triangle and check that all the sides should have the same unit. ![]() The perimeter of a triangle can be calculated by following the steps given below: When we can express 'l' in terms of 'h', we get, l = h/√2.This will be, P = 2(h/√2) + h = (√2 × h) + h
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