Question

The sides of a triangle are in the ratio 3 :5 : 7. If the perimeter of the triangle is 30 cm, find the sides of the triangle.

Answer 1

Answer:

1st side- 6 cm

2nd side- 10cm

3rd side- 14cm

Step-by-step explanation:

Solution is that add all the ratios and then divide it with each number and multiply with 30cm.

3+5+7=15

1st side- 3/15x30cm

2nd side - 5/15x30cm

3rd side - 7/15x30 cm

Hope it helped you.

Answer 2

Answer:

Step-by-step explanation:

Let the ratios of the triangle be x.

Then, the new sides are:

3x,  5x,  7x

Given:  P = 30 cm

3x + 5x + 7x = 30 cm

15x = 30

x = 30/15

x = 2 cm

The sides of the triangle are

3x = 3×2 = 6cm

5x = 5×2 = 10cm

7x = 7×2 = 14cm

(if this helped pls vote)