The sides of a triangle are 7 cm, 9 cm and 14 cm. Its area is
Let a, b and c are the sides of triangle and s is the semi-perimeter, then its area is given by:
A = 
where 
[Heron’s Formula]
= 
= 15
A = 
A = 
= 12√5 cm2
3
The sides of a triangle are 7 cm, 9 cm and 14 cm. Its area is
Let a, b and c are the sides of triangle and s is the semi-perimeter, then its area is given by:
A = where [Heron’s Formula]
= = 15
A =
A = = 12√5 cm2