Question

Triangles 1 and 2 are similar. The perimeter of Triangle 1 is 65 meters and the perimeter of Triangle 2 is 125 meters.

What is the ratio a:b ?


625:169


169:625


25:13


13:25

Answer 1

D

Explanation:

I can't explain how the other answers were obtained. I can only give you the answer. First of all, it is linear. There are no squared numbers involved.

65/125 = (13 * 5) / (5 * 25) The 5s on the top and bottom cancel out.

Answer 13/25