Surface Area and Volumes (IMO Mathematics Olympiad (SOF) Class 9): Questions 37  42 of 104
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Question number: 37
» Surface Area and Volumes
Question
The volume of a sphere is the curved surface of its sphere is ________
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 38
» Surface Area and Volumes
Question
The area of a quadrilateral PQRS, in which, is an equilateral triangles of side 12 cm and is________.
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 39
» Surface Area and Volumes
Question
If the altitude of an equilateral triangle is , its area is ________
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 40
» Surface Area and Volumes
Question
A bus stop is barricaded from the remaining part of the road, by using 75 hollow cones made of recycled cardboard. Each cone has a base diameter of 60 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. 17 per m^{2}, what will be the cost of painting all these cones? (Use and take)
Choices
Choice (4)  Response  

a.  Rs. 1645 

b.  Rs. 1742 

c.  Rs. 1224 

d.  Rs. 1586 

Question number: 41
» Surface Area and Volumes
Question
The volume of the largest circular cone that can be cut of a cube whose edge is 8 cm is ________
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Choice (4)  Response  

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b. 


c. 


d. 


Question number: 42
» Surface Area and Volumes
Question
A circular park of 80 metre diameter has a circular path just inside the boundary of width 8 metre. The area of path is ________
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Choice (4)  Response  

a. 


b. 


c. 


d. 

