Question

what is the formula of semiperimetre of triangle ​

Answer 1

Answer:

$s = \frac{a + b + c}{2} \\ ar \: of \: tri. = \sqrt{s(s - a)(s - b)(s - c) }$

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Answer 2

Let the triangle have sides of length a, b and c

Then, semiperimeter = (a+b+c)/2

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