Triangles and Circles (IMO Mathematics Olympiad Class 9): Questions 13  16 of 79
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Question number: 13
» Triangles and Circles
Question
In the adjoining figure, , then is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 14
» Triangles and Circles
Question
The area of trapezium PQRS is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 15
» Triangles and Circles
Question
C1 is a circle of radius 4 cm, C2 is a circle of radius 12 cm. Jyoti wants the two circles to touch tangentially. She knows that there are two possibilities for the distance between their centers. What are these two distances?
Choices
Choice (4)  Response  

a.  8 cm and 10 cm 

b.  8 cm and 16 cm 

c.  10 cm and 16 cm 

d.  13 cm and 4 cm 

Question number: 16
» Triangles and Circles
Question
The and are right angles. If, and, then the length of QR and QS respectively is ________
Choices
Choice (4)  Response  

a.  15 cm, 12 cm 

b.  16 cm, 15 cm 

c.  25 cm, 12 cm 

d.  15 cm, 16 cm 
