# In a triangle ABC

Let the sides be AB = a = 15cm,

BC = b = 13cm and,

AC = c = 14cm.

Sides of triangle are a = 15cm, b = 13cm, c = 14cm.

By Heron’s formula we get area of triangle

=

(where s = s is called as the semi perimeter )…(1)

we get

Substituting the value of s, a, b and c in equation 1 we get

=

=

The area of a triangle is.

The altitude on AC,

AC = c = 14

Now the area of a triangle having base and altitude is given by

=

=

Altitude =

Altitude = 16.92cm

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