IMO Level 1 Mathematics Olympiad (SOF) Class 9: Questions 377  382 of 929
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Question number: 377
Question
A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. The area of the lawn is 2109 sq. m. What is the width of the road?
Choices
Choice (4)  Response  

a.  3 m 

b.  6 m 

c.  7 m 

d.  2 m 

Question number: 378
Question
From the adjoining figure, the value of k is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 379
Question
If xcoordinate of a point is zero than this point always lies________.
Choices
Choice (4)  Response  

a.  Yaxis 

b.  Xaxis 

c.  III quadrant 

d.  II quadrant 

Question number: 380
Question
In given figure. Then is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 381
Question
The centroid of a triangle divides each median in the ratio ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 382
Question
The point concurrency of altitudes of a triangle is called ________
Choices
Choice (4)  Response  

a.  Incenter 

b.  Centroid 

c.  Orthocenter 

d.  Circumcenter 
