Question

The Sides of a triangle is 13cm 14cm 15 CM find the semi perimeter of a triangle

Answer 1

Hi friend

$semi \: perimeter = \frac{perimeter}{2}$

$= \frac{13 + 14 + 15}{2}$

$= \frac{28}{2}$

$hence \: semi \: perimeter = 14 \: cm$

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Answer 2

Answer:

A = 13 CM

B = 14 CM

C = 15 CM

S = A+B+C/2

S = 13+14+15/2

S = 2

THIS IS SEMI - PERIMETER FORMULA

USE 'S' IN HERON'S FORMULA TO FIND AREA

AREA = UNDER ROOT S(S-A)(S-B)(S-C)

UNDER ROOT MEANS WHOLE ROOT

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