IMO Level 1 Mathematics Olympiad (SOF) Class 8: Questions 464  470 of 1040
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Question number: 464
Question
A right cylindrical vessel is full with water, how many right cones having half diameter and height as that of right cylinder will be needed to store that water?
Choices
Choice (4)  Response  

a.  23  
b.  24  
c.  25  
d.  12 
Question number: 465
Question
The radius of the cylinder whose lateral surface area is 520 and height 5 cm, is________.
Choices
Choice (4)  Response  

a.  12 cm  
b.  14 cm  
c.  17 cm  
d.  11 cm 
Question number: 466
Question
Surface area of a cube with edge = 1.2 cm is________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 467
Question
Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 468
Question
The ratio of areas of two squares, one having triple its diagonals than the other is________.
Choices
Choice (4)  Response  

a.  2: 3  
b.  2: 9  
c.  9: 1  
d.  5: 3 
Question number: 469
Question
The ratio of areas of two squares, one having double its diagonals than the other is________.
Choices
Choice (4)  Response  

a.  4: 1  
b.  9: 1  
c.  2: 3  
d.  2: 9 
Question number: 470
Question
Three cubes whose edges are 1 cm, 6 cm, and 8 cm respectively are melted without any loss of metal into a single cube. The edge of new cube is________.
Choices
Choice (4)  Response  

a. 
 
b.  
c. 
 
d. 
