Find the area of a triangle whose sides are `13 c m ,14c m ,15cm`

Explanation

We get `s=(13+14+15)/2`
`S=21cm`
Now area`=sqrt(s(s-a) (s-b) (s-c))`
`=sqrt(21(21-13)(21-14)(21-15))`
`=sqrt(21(8)(7)(6))`
`=sqrt(21(336))`
`=sqrt(7056)`
`=84 cm^2`
Hence, the area of triangle is `84 cm^2`.