Question

10. The sides of a triangle are in the ratio 1:3:5. If the perimeter is 90 cm, find its sides.​

Answer 1

Given :-

• Side of triangle are in ratio 1:3:5
• Perimeter of triangle = 90cm

To Find :-

• Measurements of the sides.

Solution :-

Let the sides be 1x , 3x , 5x

Perimeter = 90 cm

A.T.Q.

Perimeter = 90cm

Sum of all sides = 90cm

1x + 3x + 5x = 90cm

9x = 90cm

x = 90/9 cm

x = 10cm

Now,

1x = 1 × 10 = 10cm

3x = 3 × 10 = 30cm

5x = 5 × 10 = 50cm

Answer 2

Answer:

The sides of the triangle are 10cm,30cm and 50cm.

Step-by-step explanation:

Let the addition of

1x + 3x + 5x = 90 cm.( because perimeter of triangle= addition of three sides. And here x is because all the sides are in same ratio)

so,1x + 3x + 5x =90,

9x=90

x=90/9

so,. x=10

So put x=10 in every place

then the answer is

1x=10

3x=30

5x=50.

Hope it will help you.☺️