Question

The sides of triangle are 16 cms,30cms,34cms.find its area

Answer 1

semiperimeter "s" =sum of all sides/2
                             =16+30+34/2
                             =80/2
                              =40cm
area of triangle = root s(s-a)(s-b)(s-c) 
                        =root 40(40-16)(40-30)(40-34)
                        =root 40(24)(10)(6)
                         =240 root 10 cm square