IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 397  403 of 929
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Question number: 397
» Lines, Angles and Quadrilaterals
Question
In the adjoining figure, Line p and q are transversals, then ST = ________
Choices
Choice (4)  Response  

a.  10 units  
b.  15 units  
c.  12 units  
d.  14 units 
Question number: 398
Question
In the medians PS, QT and RU pass through O. if , and then OS is ________
Choices
Choice (4)  Response  

a.  2.5  
b.  2.6  
c.  2.3  
d.  2.9 
Question number: 399
Question
What change in percent is made in the area of a rectangle by decreasing its length and increasing its breadth by ?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 400
Question
The heights of two cones are in the ratio of 3: 8 and their radius in the ratio 5: 3. Then the ratio of their volumes is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 401
Question
PQRS is a cyclic Quadrilateral whose diagonals intersect at a point E. If , , , then =________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 402
Question
The area of rhombus is and one of its diagonals is 8 cm. its perimeter is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 403
Question
The largest sphere is cut off from a cube of side 8 cm. the volume of the sphere will be ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
