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Q.

How many liters of milk can a hemispherical bowl of diameter 10.5 cm hold?


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a

0.303 liters

b

0.323 liters

c

1.303 liters

d

0.603 liters 

answer is A.

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Detailed Solution

We know that the relation of radius and diameter is given by the following expression:
Radius= Diameter 2  
Radius= 10.5 2 cm  
Radius=5.25cm(1)  
Now, we know that the volume of a hemisphere is given by:-
Volume= 2 3 π r 3 (2)  ,
Now, by using (1) and (2), we will get the volume of the hemisphere as follows:
Volume= 2 3 π (5.25) 3  
Volume= 2 3 × 22 7 × (5.25) 3  
Volume=303.1875c m 3  
Now, since we are asked to find the volume in liters and this is cubic cm,
we need to convert the cubic cm into liters using the relation given by:
1c m 3 = 1 1000 litres  
Since,
303.1875c m 3 = 303.1875 1000 litres  
303.1875c m 3 =0.3031875litres  
We can approximate it as,
303.1875c m 3 =0.303litres  
 
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