Answer:
The answer option your looking for is B - 52/3ft^2
52 sqrt(3) ft^2
Explanation:
The area of the trapezoid is found by
A = 1/2 (b1+b2) *h where b1 and b2 are the lengths of the bases and h is the height
A = 1/2 ( 11+15) * 4 sqrt(3)
= 1/2 (26) * 4 sqrt(3)
= 13* 4 sqrt(3)
52 sqrt(3)
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