IMO Mathematics Olympiad Class 9: Questions 370  375 of 919
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Question number: 370
Question
If the point (7, k) is on the graph of the equation find the value of k?
Choices
Choice (4)  Response  

a.  20 

b.  5 

c.  15 

d.  10 

Question number: 371
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: 372
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 

Question number: 373
Question
In the given figure, , where A, B and C are points on a circle with center O. then is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 374
Question
From the adjoining figure, the value of x is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 375
Question
A cylindrical rod whose height is 8 times of its radius is melted and recast into spherical balls of same radius. The numbers of balls will be________
Choices
Choice (4)  Response  

a.  3 

b.  6 

c.  4 

d.  8 
