IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 351  355 of 929
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Question number: 351
Question
The area of a quadrilateral JKLM, in which , is an equilateral triangles of side 20 cm and is________.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 352
Question
A1 is a circle of radius 8 cm, A2 is a circle of radius 12 cm. Shivangi wants the two circles to touch tangentially. She knows that there are two possibilities for the distance between their centres. What are these two distances?
Choices
Choice (4)  Response  

a.  4 cm and 20 cm  
b.  5 cm and 19 cm  
c.  12 cm and 4 cm  
d.  16 cm and 8 cm 
Question number: 353
» Linear Equations in Two Variables
Question
In the figure, the value of x if , is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 354
Question
Triangle PAB is formed by three tangents to circle with center O and , then angle AOB equals ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 355
Question
A wooden article was made by scooping out a hemisphere from each end of a solid cylinder. If the height of the cylinder is 20 cm, and its base is of radius 7.5 cm, find the total surface area of the article.
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
