The sides of a rectangle are in the ratio 3:2. what is the length h of each side if the perimeter of the rectangle is 30cm?

An easy way to solve this is to simply multiply the ratio until the 3:2 (2) equals 30. We should multiply the 3 and 2 by 3 because that makes the equation 9:6. 9+6=15, which we then multiply by 2 because there are 4 sides.

Using the logic above, we can see that the length is 9 and the width is 6.