Every 3 days seth goes to the grocery store his best friend brain goes every five day on what day will they go will they both go to the store on the same day

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