Surface Area and Volumes (IMO Mathematics Olympiad Class 9): Questions 89  92 of 104
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Question number: 89
» Surface Area and Volumes
Question
The edge of a cube is 20 cm. how many small cubes of 5 cm edge can be formed from this cube?
Choices
Choice (4)  Response  

a.  32 

b.  64 

c.  100 

d.  4 

Question number: 90
» Surface Area and Volumes
Question
A corn cob somewhat like a cone, has the radius of the broadest end as 2.1 cm and length as 20 cm. If each 1 cm ^{2} of the surface of the cob carries an average of 3 grains, find how many grains you would find on the entire cob?
Choices
Choice (4)  Response  

a.  670 grains 

b.  881 grains 

c.  980 grains 

d.  550 grains 

Question number: 91
» Surface Area and Volumes
Question
Points P, Q, R and S divide the sides of rectangle ABCD in the ratio , as shown in the figure. What fraction of area of the rectangle is the area of the parallelogram PQRS?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 92
» Surface Area and Volumes
Question
Rectangular plot area is and the length is 22 m. Also perimeter is ________
Choices
Choice (4)  Response  

a.  82 m 

b.  84 m 

c.  83 m 

d.  85 m 
