Surface Area and Volumes (IMO Mathematics Olympiad Class 9): Questions 68  71 of 104
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Question number: 68
» Surface Area and Volumes
Question
A rectangle is divided into five smaller rectangles, as shown in the figure. Four of them have areas, , and as indicated. Then the area of the shaded rectangle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 69
» Surface Area and Volumes
Question
Two cubes each of volume are joining end to end. Find the surface area of the resulting cuboid.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 70
» Surface Area and Volumes
Question
Two cylinders of same volume have their heights in the ratio 1: 3. Find the ratio of their radii?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 71
» Surface Area and Volumes
Question
A cylindrical vessel 60 cm in diameter is partially filled with water. A sphere, 60 cm in diameter is gently dropped into the vessel. To what further height will water rise in the cylinder?
Choices
Choice (4)  Response  

a.  25 cm 

b.  15 cm 

c.  30 cm 

d.  40 cm 
