Question

the perimeter of a triangle is 135 cm and its sides are in ratio of 25 ,17 and 12 .find the area. also the earlier answer in brainly is wrong

Answer 1

given,

perimeter of triangle = 135 cm

ratio of its sides= 25,17&12

let the common multiple of the sides be x

25x + 17x + 12x= 135

54x = 135

x=135/54

x=2.5

25x=25X2.5=62.5

17x=17X2.5=42.5

12x=12X2.5=30

Now, you have got the sides you can now find the area of triangle by heron's formulae or by any other suitable formulae