IMO Mathematics Olympiad (SOF) Class 9: Questions 242  245 of 919
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Question number: 242
Question
A rectangle is divided into four smaller rectangles, as shown in the figure. Three of them have areas, and as indicated. Then the area of the shaded rectangle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 243
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: 244
» Lines, Angles and Quadrilaterals
Question
In the figure, and, then
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 245
Question
A rectangular field has its length and breadth in the ratio. Its area is 3.75 hectares. The cost of fencing it at Rs. 5 per meter is ________
Choices
Choice (4)  Response  

a.  Rs. 1000 

b.  Rs. 500 

c.  Rs. 4000 

d.  Rs. 400 
