(Q17) Find the area of the triangle the lengths of whose sides are 7m,24m,25m(use Heron's Formula).

Given The sides of a triangle a= 7m; b= 24m; c =25m;

Now , S =
a+b+c
2
 =
++
2
 =
2
 =

Herons formula

∆ = √(S(S-a)(S-b)(S-c))

A = √(()( - 7)( - 24)( - 21))

  = √(()×() × () × ())

 =√

 =.31 sq.units