IMO Mathematics Olympiad (SOF) Class 9: Questions 417  423 of 919
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Question number: 417
Question
The area of an isosceles triangle having base x cm and one side y cm is________
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 418
Question
Which of the points A (0,6), B (2,4), C (4,0), D (0, 2), E (0, 5), F (4, 4) do lie on the Quadrant 1 and 4?
Choices
Choice (4)  Response  

a.  P, S, W, U and R 

b.  Q, R, T, V and X 

c.  Q, R, W, U and T 

d.  P, R, T, U and X 

Question number: 419
Question
If the height of cone is thrice, then its volume is increased by________.
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 420
Question
The altitude drawn to the base of an isosceles triangle is of length 6 cm and the perimeter is 72 cm. the area of the triangle is ________
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 421
Question
A rectangular field has its length and breadth in the ratio. Its area is 10.29 hectares. The cost of fencing it at RS. 8 per meter is ________
Choices
Choice (4)  Response  

a.  Rs. 15400 

b.  Rs. 14200 

c.  Rs. 11200 

d.  Rs. 21500 

Question number: 422
Question
The volume of the largest circular cone that can be cut of a cube whose edge is 16 cm is ________
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 423
Question
In the figure , and . Then x equals ________.
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Choice (4)  Response  

a. 


b. 


c. 


d. 

