Question

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

Answer 1

Step-by-step explanation:

let side of triangle is 3x,4x,5x

perimeter of triangle=sum of all sides

then, 3x+4x+5x=12x

but, perimeter=48

then,

12x=48

x=48/12=4

sides=12cm,16cm,20cm

Answer 2

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