IMO Mathematics Olympiad Class 9: Questions 277  281 of 919
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Question number: 277
Question
In the given figure, the area of shaded portion is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 278
Question
In triangle HKM, the altitude from H to KM meets KM at J, and the altitude from K to HM meets HJ at S. if , and , if then the length of SJ is ________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 279
Question
On plotting the points A (3, 6), B (9, 6), C (5, 8), D (11, 8), E (11, 3), F (9, 1), G (3, 1) and joining AB, AC, BD, CD, DE, BF, AG, EF, GF Which of the following figure is obtained?
Choices
Choice (4)  Response  

a.  Teardrop  
b.  Can  
c.  Cube  
d.  Chord 
Question number: 280
Question
If the coordinate of the two points are A (2, 6) and B (4, 5) then (abscissa of A)  (abscissa of B) is ________
Choices
Choice (4)  Response  

a.  1  
b.  2  
c.  1  
d.  2 
Question number: 281
Question
The ratio between the length and the breadth of a rectangular park is . If a man cycling along the boundary of the park at the speed of 15 km/hr completes one round in 12 minutes, then the area of the park is________
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 
