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 second 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)  3.6 m

E)  None of these