Question

the perimeter of triangle is 60 cm and the length of the three sides of triangle is in ratio 2:3:5 what is the length of its three sides?

Answer 1

the ratio is 2:3:5. so let the sides be 2k, 3k, 5k.
the perimeter is 60.
perimeter= sum of all sides.
so, k=6.
12,18,30.

Answer 2

If the ratio is 2 : 3 : 5 then let the length of the sides be 2x , 3x & 5x.
Perimeter = 60 cm
Then ,
 2x + 3x + 5x = 60
⇒ 10x = 60
⇒ x = 60/10
⇒ x = 6
First side = 2x = 2 X 6 = 12 cm
Second side = 3x = 3 X 6 = 18 cm
Third side = 5x = 5 X 6 = 30 cm