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38. A hemispherical tank full of water is emptied by a pipe at the rate of 3 litresper second. How much time will it take to empty half the tank, if it is 3 mindiameter ? (Take * = )1mum of the cores of the |
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Answer» 3min=180s=>540litres, SENT out half tank, therefore TOTAL 1080 LITRES capacitive hemisphere,(2/3)pi *r^3=1080. |
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