Question

The perimeter of a triangle is 72 cm length of its sides are 3:4:5 work out the area

Answer 1

let,

ratio of sides=3x:5x:4x

perimeter=3x+5x+4x=72

12x=72

x=72/12

x=6

sides

a=3*6=18

b=5*6=30

c=4*6=24