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A school provides milk to the studenst daily in a cylinder glasses of diameter 7 cm. If the glass is filled with milk upto an height of 12 cm, find how many liters of milk is needed to server 1600 students. |
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Answer» Given, diameter of glass = 7 cm Radius of glass, `r = (7)/(2) cm` `therefore` Milk contained in the cyllindrical glass = volume of cylindrical glass ` pir^(2)h = (22)/(7) xx (7)/(2) xx (7)/(2) xx 12 = 462 cm^(3)` Now, milk required for 1600 students `= 462 xx 1600 = 739200 cm^(3) ` `" "(739200)/(1000) = 7392 L" "[because 1 cm^(3) =(1)/(1000)L]` Hence, 739.2 L milk is needed to serve 1600 students. |
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