Q1 of 31 Page 45

If the sides of a triangle are 25 cm, 39 cm, and 56 cm, what is the area of this triangle?

Given:


Length of one side of the triangle (a) = 25 cm


Length of second side of the triangle(b) = 39 cm


Length of third side of the triangle (c) = 56 cm


Semi perimeter (s) =


According to Heron’s formula


Area of the triangle = √(s(s-a)(s-b)(s-c))


⇒ Area of the triangle = 420 sq cm


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