A trapezoid b1=4 2/4 ft. b2=2 1/2 ft. h=6 ft.

I'm gonna assume you're looking for area. 

First, you find the average of the 2 bases. (4 2/4+ 2 1/2)/2 = 3.5

Then you multiply that by the height. 3.5*6 = 21

 

I hope this helped. :))

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