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 
