IMO Mathematics Olympiad Class 9: Questions 287  292 of 919
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Question number: 287
Question
The and are right angles. If , and , then the length of BD is ________
Choices
Choice (4)  Response  

a.  25 cm  
b.  15 cm  
c.  12 cm  
d.  16 cm 
Question number: 288
Question
The volume of a sphere is the curved surface of its sphere is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 289
Question
The area of trapezium ABCD is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 290
Question
is a point, which belongs to the line________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 291
Question
If the coordinate of the two points are P (4, 5) and Q (2, 3) then ________
Choices
Choice (4)  Response  

a.  2  
b.  3  
c.  5  
d.  4 
Question number: 292
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. 
