1.

a rectangular reservoiris is 10.8*3.75 at base water flow into it at the rate of 18m/sec through a pipe having cross section 7.5 cm*45 find the hieght to which of th water reach in 15 mins

Answer»

Answer:

WATER COMES out from pipe in 1 SEC = 7.5*4.5*1800 = 60750 cm^3 = 6.075 m^3

water comes out from pipe in 30 MIN = 6.075*30*60 = 10935 m^3

10.8*3.75*rise in level = 10935

rise in level = 10935/ (10.8*3.75) = 10935/40.5 = 270 m

RISE IN WATER LEVEL = 270m

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