



 
Kelsey, I don't understand this problem. I think "weight" must be a typo but even then it is confusing. A trapezoid has two parallel sides and its area is
Here is an example The parallel sides have lengths 9 and 4 units so the average is (9 + 4)/2 units. The distance between the parallel sides is 3 units and hence the area is
Notice that If I told you the lengths of the parallel sides were 9 and 4 cm, the area was 19.5 square cm and asked for the distance x between the parallel sides then the area expression would be
I could then solve for x to find x = 3 cm. I hope this helps,  


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