Question

8. The perimeter of a triangle is 48 cm. If its sides are in the ratio 3:4:5, find the length of each side.​

Answer 1

Answer

Lengths of the sides are 12cm, 16cm and 20 cm.

Step-by-step explanation:

The sides are in the ratio 3:4:5.

Let us take the three sides to be 3x,4x and 5x.

3x+4x+5x=48  (Sum of the sides of the triangle = perimeter of the triangle)

12x=48

x=4

Therefore,

First side = 3x = 3*4 = 12cm

Second side = 4x = 4*4 = 16cm

Third side = 5x = 5*4 = 20cm

Step-by-step explanation:

Answer 2

Answer:

side 1 = 12cm

side 2 = 16cm

side 3 = 20cm

Step-by-step explanation:

let the ratio is

3x : 4x : 5x

3x + 4x + 5x = 48

12x = 48

x = 48/12

x = 4

find all sides

3x = 3 × 4 = 12cm

4x = 4 × 4 = 16cm

5x = 5 × 4 = 20cm

hope it helps you