Mental AbilityBasic Geometry (NCO Cyber Olympiad Class 9): Questions 1  5 of 25
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Question number: 1
» Mental Ability » Basic Geometry
Question
Three circles of radii 2 cm each touch each, other externally. Then the area of the triangle with vertices at centers of these circles is________.
Choices
Choice (4)  Response  

a.  More than 6 but less than 7 

b.  More than 7 

c.  Less than 6 

d.  All of the above 

Question number: 2
» Mental Ability » Basic Geometry
Question
How many circles can be drawn though two given points.
Choices
Choice (4)  Response  

a.  1000 only 

b.  10 only 

c.  Infinity 

d.  2 only 

Question number: 3
» Mental Ability » Basic Geometry
Question
Four circles of radii 4 cm each touch each, other externally. Then the area of the square with vertices at centers of these circles is________.
Choices
Choice (4)  Response  

a.  More than but Less than 

b.  Less than 

c.  More than 

d.  Equal to 

Question number: 4
» Mental Ability » Basic Geometry
Question
If the radius of a circle is doubled, then its area is ________.
Choices
Choice (4)  Response  

a.  Not related to the area of the smaller circle 

b.  4 times the area of the smaller circle 

c.  Doubled 

d.  None of the above 

Question number: 5
» Mental Ability » Basic Geometry
Question
Complete the missing portion of the given Figure A.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
