IMO Mathematics Olympiad Class 8: Questions 483  487 of 1029
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Question number: 483
Question
A cylindrical tower is 5 meters in diameter and 10 meters height. The cost of white washing its curved surface at 25 paisa per is
Choices
Choice (4)  Response  

a.  40 

b.  37 

c.  39 

d.  24 

Question number: 484
Question
The surface areas of the six faces of a rectangular solid are 1, 1, 9, 9, 25 and 25 square centimeters. The volume of the solid, in cubic centimeters is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 485
Question
In the given figure PQRS is a square inscribed in a circle with center O and radius r. The total area of shaded region is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 486
Question
The dimensions of an open box are 60 cm, 50 cm and 33 cm. Its thickness is 3 cm. If 1 cubic cm of metal used in the box weights 0.5 gm, find the weight of the box.
Choices
Choice (4)  Response  

a.  13.860 kg 

b.  14.56 kg 

c.  12.11 kg 

d.  13 kg 

Question number: 487
Question
The volume of a cube is 343 , its surface area is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

