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Area of Any Polygon - by Heron's Formula

Find the peri...

Question

Find the perimeter of a triangle whose sides are $7 c m$ , $5.4 c m$ and $10.2 c m$ long.

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Solution

Finding the perimeter
Perimeter of a triangle $=$ Sum of all the sides
Perimeter of a triangle $= 7 + 5.4 + 10.2 = 22.6 c m$
Hence, the perimeter of the triangle is $22.6 c m$ .

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