The lengths of the sides of a triangle are in the extended ratio 6:7:8. The perimeter of the triangle is 105cm. What are the lengths of the sides?

Question

I’m understanding everything but these types of problems.

Answer 1

 

Okay, so the sides are in the ratio 6:7:8

The perimeter is the sum of all three sides.

6X + 7X + 8X = 105

21X = 105

X = 5

So the sides are:

30cm, 35cm, 40 cm