A school provides milk to the students daily in cylindrical glasses of diameter 7cm.If the glass is filled with milk upto a height of 12cm,find how many litres of milk is needed to serve 1600 students.
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Answered by
22
the diameter of the cylindrical glass = 7 cm.
therefore the radius of the glass r = 7/2 =3.5 cm
the height of the glass h =12 cm
the volume of the glass =πr^2h
=22/7×3.5×3.5*12=462cm^3
since 1 cubic cm = 0.001 liter
the milk in 1 glass = 462*0.001 =0.462 lt
the milk needed for 1600 students = 0.462*1600=739.20
hope it helped u........☺️
therefore the radius of the glass r = 7/2 =3.5 cm
the height of the glass h =12 cm
the volume of the glass =πr^2h
=22/7×3.5×3.5*12=462cm^3
since 1 cubic cm = 0.001 liter
the milk in 1 glass = 462*0.001 =0.462 lt
the milk needed for 1600 students = 0.462*1600=739.20
hope it helped u........☺️
hope u will mark as brainliest!!
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Answered by
8
Total volume of milk needed = 1600 ×πr^2h
Then, πr^2h = 22/7× (7/2)^2× 12
πr^2h = 22× 7/4×12 = 22× 21 cm^3
= 462 cm^3
Total volume needed = 1600× 462 cm^3 = (1600×462)/1000 litre
739.2 litre
Then, πr^2h = 22/7× (7/2)^2× 12
πr^2h = 22× 7/4×12 = 22× 21 cm^3
= 462 cm^3
Total volume needed = 1600× 462 cm^3 = (1600×462)/1000 litre
739.2 litre
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