A rectangular water tank is 80 mxx40 ...

A rectangular water tank is `80 mxx40 m` . Water flows into it through a pipe 40 sq. cm at the opening at a speed of 10 km/hr. By how much, the water level will rise in the tank in half an hour? `3/2c m` (b) `4/9c m` (c) `5/8c m` (d) None of these

3/2 cm

4/9 cm

5/9 cm

5/8 cm

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A rectangular water tank is 80m xx40m . Water flows into it through a pipe 40 sq.cm at the opening at a speed of 10km/hr. By how much,the water level will rise in the tank in half an hour? (3)/(2)cm(b)(4)/(9)cm(c)(5)/(8)cm(d) None of these

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