The area of a trapezoid is 70.55 square feet. The length of the bases are 11.4 feet and 5.6 feet. What is the height of the trapezoid?

Use the trapezoid area formula: A = (b₁ + b₂)h ÷ 2. Substituting the values gives 70.55 = (11.4 + 5.6)h ÷ 2 = 8.5h, so h = 70.55 ÷ 8.5 = 8.3 feet. The correct choice is 8.3 ft; square feet are units of area, not height.

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