question_answer

A rectangular water reservoir is 10.8 metres long and 3.75 metres wide at base. Water flows into it at the rate of 36 m per sec. Through the pipe having the cross section 7.5 cm \[\times \] 4.5 cm. Then the height to which the water will rise in the reservoir in 15 minutes is ______

A) 2.7 m    

B) 3.2 m

C) 2.9 m              

D) 3.2 m

E) None of these