Surface Area and Volumes (IMO Mathematics Olympiad (SOF) Class 9): Questions 58  63 of 104
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Question number: 58
» Surface Area and Volumes
Question
If the volumes of two cones are in the ratio 1: 4 and their diameters are in the ratio 4: 5, and then the ratio of their heights is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 59
» Surface Area and Volumes
Question
How many metres of cloth, 5 m wide, will be required to make a conical tent, the radius of whose base is 7 m and height is 24 m?
Choices
Choice (4)  Response  

a.  105 m 

b.  110 m 

c.  100 m 

d.  120 m 

Question number: 60
» Surface Area and Volumes
Question
In the given figure, O is the center of the bigger circle and WY is its diameter, another circle with WX as diameter is drawn. If WY = 54 cm and xy = 10 cm, the area of shaded region________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 61
» Surface Area and Volumes
Question
The edge of a cube is 18 cm. how many small cubes of 9 cm edge can be formed from this cube?
Choices
Choice (4)  Response  

a.  8 

b.  1 

c.  64 

d.  48 

Question number: 62
» Surface Area and Volumes
Question
If the radius of a sphere is doubled, then its volume is increased by________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 63
» Surface Area and Volumes
Question
Volume of a hemisphere is 19404 cubic cm. The total surface area is ________.
Choices
Choice (4)  Response  

a.  1386 sq. cm 

b.  2772 sq. cm 

c.  4158 sq. cm 

d.  5544 sq. cm 
