IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 289  295 of 929
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Question number: 289
Question
is a point, which belongs to the line________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 290
Question
If the coordinate of the two points are P (4, 5) and Q (2,3) then ________
Choices
Choice (4)  Response  

a.  2  
b.  5  
c.  3  
d.  4 
Question number: 291
Question
The radii of two cones are in ration 3: 1, their volumes are equal. Find the ratio of their heights.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 292
Question
A solid consists of a circular cylinder with an exact fitting right circular cone placed on the top. The height of a the cone is h. If the total volume of the solid is three times the volume of the cone, then the height of the cylinder is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 293
Question
The area of rhombus is and one of its diagonals is 8 cm. Its perimeter is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 294
Question
Centroid of a triangle is the point of concurrency of its ________
Choices
Choice (4)  Response  

a.  Triangle  
b.  Perpendicular bisectors  
c.  Medians  
d.  Angle 
Question number: 295
Question
216 plastic balls each of radius r are melted together to from one big sphere of radius R. then the ratio of surface area of the big sphere to that of a ball is ________
Choices
Choice (4)  Response  

a.  9  
b.  36  
c. 
 
d. 
