The water in a rectangular reservoir has a base 80 m × 60 m and is 6.5 m deep. In what time(in hours) can the water be emptied by a pipe having a cross section in the form of a square of side 20 cm, if water runs through the pipe at the rate of 15 km/ hr?
A cuboidal reservoir of base 80 m×60 m is 6.5 m deep. In what time(in hours) can the water be emptied by a pipe having a cross section in the form of a square of side 20 cm, if water runs through the pipe at the rate of 15 km/hr?