Answer :

It is given in the question that,

Sides or triangle ABC are:

BC = 13 cm

AC = 14 cm

AB = 15 cm

We know that,

Perimeter of triangle = Sum of all sides

= AB + BC + AC

= 15 + 13 + 14

= 42 cm

∴ s =

=

= 21 cm

Hence,

Area of =

=

=

= 84 cm^{2}

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