A classroom floor is in the shape of a trapezoid and needs to be tiled. one of the parallel sides of the room measures 25 feet and the opposite side measures 19 feet. the distance between these sides is 21 feet. which answer represents the area of the classroom floor? show how you determined your answer. a 462 ft2 b. 475 ft2 c. 924 ft? d. 950 ft2