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Area of a Triangle - by Heron's Formula

A triangle ha...

Question

A triangle has side length $18, 24$ and $30$ .Find the area of the triangle ?

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Solution

$∵ a = 18; b = 24; c = 30 h e n c e, s = \frac{a + b + c}{2} = \frac{18 + 24 + 30}{2} = 36 A r e a = \sqrt{s (s - a) (s - b) (s - c)} = \sqrt{36 (36 - 18) (36 - 24) (36 - 30)} = 216 s q . u n i t$

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