IMO Mathematics Olympiad (SOF) Class 9: Questions 251  256 of 919
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Question number: 251
Question
The area of an isosceles triangle having base 32 cm and one side 20 cm is________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 252
Question
A circular park of 20 metre diameter has a circular path just inside the boundary of width 1 metre. The area of path is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 253
Question
What is the point of concurrency of the perpendicular bisectors in a triangle called ________.
Choices
Choice (4)  Response  

a.  Circumcentre 

b.  Centroid 

c.  Incentre 

d.  Orthocentre 

Question number: 254
Question
A covered wooden box has the inner measures as 115 cm, 75 cm, 35 cm and the thickness of wood is 2.5 cm. Then the volume of the wood is________
Choices
Choice (4)  Response  

a.  80,000 cu. Cm 

b.  82,125 cu. Cm 

c.  85,000 cu. Cm 

d.  84,000 cu. Cm 

Question number: 255
» Lines, Angles and Quadrilaterals
Question
A triangle and a parallelogram are equal in area. They also have the same altitude. If the base of the triangle is 22 inches, the area of the trapezoid is ________.
Choices
Choice (4)  Response  

a.  2 inches 

b.  Not obtainable from these data 

c.  19 inches 

d.  11 inches 

Question number: 256
» Lines, Angles and Quadrilaterals
Question
In the figure, PQRS is a square. A line segment SX cuts the side QR at X and the diagonal PR at O such that, then y = ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

