Question

Please explain how to do this

Answer 1

First u gonna divide 39.4 by 16,5 u get 2,38

Answer 2

Since we know what one side is, there is another side equal to how that side looks like. So, the long sides are 16.5 + 16.5 = 33. Therefore, (39.4 - 33) / 2 will get you your answer.