IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 282  288 of 929
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Question number: 282
Question
In the medians XC, YB and ZA pass through O. If , then YB is ________
Choices
Choice (4)  Response  

a.  19  
b.  21  
c.  26  
d.  11 
Question number: 283
Question
In the figure , and . If the exterior angle XZK is , then the angle NMX is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 284
Question
The number of spherical balls each 4 cm in diameter be made out of a rectangular solid is ________
Choices
Choice (4)  Response  

a.  107  
b.  105  
c.  102  
d.  109 
Question number: 285
Question
The ratio between the perimeter and breadth of rectangle is . If the area of the rectangle is 116 sq. cm. then length of the rectangle is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 286
Question
The and are right angles. If , and , then the length of BD is ________
Choices
Choice (4)  Response  

a.  16 cm  
b.  15 cm  
c.  12 cm  
d.  25 cm 
Question number: 287
Question
The volume of a sphere is the curved surface of its sphere is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 288
Question
The area of trapezium ABCD is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
