Question

the sides of a triangle are the ratios, 1 : 1 :5 : 2 and the perimeter is 18 cm . find the length of each side ​

Answer 1

Answer: 4 , 6 , 9

given

sides of a triangle are in the ratios 1:1.5:2

perimeter is 18 cm

to find

length of each side

assumption

let the ratio be in terms  of x

solution

sides of triangle are x, 1.5x, 2x

perimeter = x + 1.5x + 2x

                = 4.5x

given perimeter = 18

therefore 4.5x = 18

===> x = 4

1.5x = 6

2x = 9