what are the lengths of the sides?

Question

The lengths of the sides of a triangle are in the extended ratio 6 : 7 : 10. The perimeter of the triangle is 69 cm. What are the lengths of the sides?

Answer 1

Sum the ratio of the sides: 6 + 7 + 10 = 23.

 

23 times x = 69

 

x = 3

 

3 times 6 = 18; 3 times 7 = 21; 3 times 10 = 30.

 

Check: 18 + 21 + 30 = 69