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An isosceles trapezoid, the base angle is 45 degrees, the upper bottom is 8 cm long, and the lower bottom is 12 cm long. What is the area of this trapezoid?
An isosceles trapezoid, the base angle is 45 degrees, the upper bottom is 8 cm long, and the lower bottom is 12 cm long. What is the area of this trapezoid?
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