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Answer! if you don’t mind, can you explain

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.