IMO Level 1 Mathematics Olympiad (SOF) Class 10: Questions 775  777 of 968
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Question number: 775
Question
A man runs around a circle of radius at a speed of The time taken by him for going around it twenty times is ________.
Choices
Choice (4)  Response  

a.  10 mins 35 secs  
b.  20 mins 54 secs  
c.  10 mins 42 secs  
d.  12 mins 35 secs 
Question number: 776
Question
A sphere is placed in a cone of height as shown in figure. The volume of sphere if it touches lateral surface and base of cone is________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 777
Question
What is the total surface area of the cone?
Statements
The area of the base of the cone is
The curved surface area of the cone is
The volume of the cone is
Choices
Choice (4)  Response  

a.  Either one of the statements is sufficient.  
b.  Either statement Ⅱ or statement Ⅲ is sufficient & only statement Ⅰ is sufficient, while others are not sufficient.  
c.  All of the statements are sufficient.  
d.  Both statement Ⅰ & statement Ⅲ are sufficient. 