IMO Mathematics Olympiad (SOF) Class 8: Questions 427  434 of 1029
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Question number: 427
» Algebraic Expressions and Identities
Question
If , then is________.
Choices
Choice (4)  Response  

a.  2 

b.  3 

c.  1 

d.  4 

Question number: 428
» Algebraic Expressions and Identities
Question
The quotient when is divided by is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  3q 

Question number: 429
» Algebraic Expressions and Identities
Question
If , find the value of .
Choices
Choice (4)  Response  

a.  727 

b.  772 

c.  723 

d.  725 

Question number: 430
» Algebraic Expressions and Identities
Question
What must be subtracted from to get?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 431
» Algebraic Expressions and Identities
Question
The perimeter of a triangle is and two of its sides are and. Find the third side of the triangle.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 432
Question
A hoop is resting vertically at staircase as shown in the diagram. AB = 12 cm and BC = 6 cm. The radius of the hoop is________.
Choices
Choice (4)  Response  

a.  11 cm 

b.  10 cm 

c.  15 cm 

d.  12 cm 

Question number: 433
Question
Find the surface area of a cylinder with diameter of base 5 cm and height 30 cm.
Choices
Choice (4)  Response  

a.  505 

b.  510 

c.  511 

d.  610 

Question number: 434
Question
Two rectangles ABCD and DBEF are as shown in the figure. The area of rectangle DBEF in square units is________.
Choices
Choice (4)  Response  

a.  120 

b.  90 

c.  160 

d.  140 
