Using Heron’s formula find the area of Δ ABC in which BC = 13 cm, AC = 14 cm and AB = 15cm.
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 cm2