A rectangular water reservoir is 15 m by...

A rectangular water reservoir is 15 m by 12 m at the base. Water flows into it through a pipe whose cross-section is 5 cm by 3 cm at the rate of 16 m per second. Find the height ot which the water will rise in the reservoir in 25 minutes :

0.2 m

2 cm

0.5 m

none of these

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