A trapezoid has one base of 8 ft, a height of 3 ft, and an area of 30 ft2. What is the length of the other base?

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问题 A trapezoid has one base of 8 ft, a height of 3 ft, and an area of 30 ft2. What is the length of the other base?

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答案 The equation for the area of a trapezoid is [*] Substitute the given variables into the equation and solve for the missing base: [*]

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