The current of a river is 4 miles per hour. a boat travels to a point 30 miles upstream and back in 4 hours. what is the speed of the boat in still water?

Someone me what is the area of this figure? 18m 18m 8m 16m

Hurrya vegetable garden and a surrounding path are shaped like a square that together are 11ft wide. the path is 2ft wide if one bag of gravel covers 9 square feet how many bags are needed to cover the path

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