A school provides milk to the students daily | vedclass

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$(C)$ The radius of the cylindrical glass $r = 	ext{diameter} \div 2 = 7 \div 2 = 3.5 \, cm$.The height of the milk in the glass $h = 12 \, cm$.The v

Vedclass · Accepted Answer

$739.2$ litres.

Vedclass · Answer

$(C)$ The radius of the cylindrical glass $r = 	ext{diameter} \div 2 = 7 \div 2 = 3.5 \, cm$.The height of the milk in the glass $h = 12 \, cm$.The volume of milk in one glass $V = \pi r^2 h = \frac{22}{7} 	imes (3.5)^2 	imes 12$.$V = \frac{22}{7} 	imes 12.25 	imes 12 = 22 	imes 1.75 	imes 12 = 462 \, cm^3$.Since $1000 \, cm^3 = 1 \, 	ext{litre}$, the volume of milk in one glass is $462 \div 1000 = 0.462 \, 	ext{litres}$.Total milk needed for $1600$ students $= 1600 	imes 0.462 \, 	ext{litres} = 739.2 \, 	ext{litres}$.

$A$ school provides milk to the students daily in cylindrical glasses of diameter $7 \, cm$. If the glass is filled with milk up to a height of $12 \, cm$, find how many litres of milk is needed to serve $1600$ students.

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