Question

The sides of a triangle are in the ratio of 3: 5: 7 and its perimeter is 300 cm. Find the length of its sides​

Answer 1

Answer: 60cm, 100 cm, 140 cm.

Step-by-step explanation: Let the sides be 3x, 5x and 7x.

Perimeter of the triangle = 300 cm

So, 3x + 5x + 7x= 300

=> 15x = 300

=> x = 300/15

=> x = 20

Therefore, the length of the sides are 3x= 3*20 = 60 cm; 5x = 5*20 = 100cm; 7x= 7*20 = 140cm respectively.