Mandy brought some flour. she used 30% of the flour to bake cake and 50% of the remainder to make some pancakes. there were 1400 g of flour left. how much flour did mandy buy?

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