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Q.

The circumference of the base of a cylindrical vessel is 132 cm and its height is 25 cm. How many litres of water can it hold? (1000 cm3= 1L)

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a

35.46 litres 

b

34.65 litres

c

345.6 litres

d

3.456 litres

answer is B.

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Detailed Solution

Given, circumference of the base =132   cm and height of the vessel =25   cm.
The circumference of the base of the cylinder is given by 2πr   .
Therefore, 2πr=132   r= 132 2π   r= 66 π  
Volume of the cylindrical vessel, V=π r 2 h   V=π 66 π 2 h   V= 66×66 π ×25   V= 66×66×7 22 ×25   V=1386×25   V=34650c m 3   V= 34650 1000  litres                   (1000 cm3= 1L)
V=34.65   litres
The cylindrical vessel holds 34.65 litres of water.
Therefore, the correct option is 2.
 
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