Surface Area and Volumes (IMO Mathematics Olympiad Class 9): Questions 78  83 of 104
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Question number: 78
» Surface Area and Volumes
Question
How many metres of cloth, 4 m wide, will be required to make a conical tent, the radius of whose base is 14 m and height is 12 m?
Choices
Choice (4)  Response  

a.  104.07 m 

b.  115.05 m 

c.  105.06 m 

d.  106.06 m 

Question number: 79
» Surface Area and Volumes
Question
The area of an isosceles triangle having base x cm and one side y cm is________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 80
» Surface Area and Volumes
Question
If the height of cone is thrice, then its volume is increased by________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 81
» Surface Area and Volumes
Question
The altitude drawn to the base of an isosceles triangle is of length 6 cm and the perimeter is 72 cm. the area of the triangle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 82
» Surface Area and Volumes
Question
A rectangular field has its length and breadth in the ratio . Its area is 10.29 hectares. The cost of fencing it at RS. 8 per meter is ________
Choices
Choice (4)  Response  

a.  Rs. 15400 

b.  Rs. 14200 

c.  Rs. 11200 

d.  Rs. 21500 

Question number: 83
» Surface Area and Volumes
Question
The volume of the largest circular cone that can be cut of a cube whose edge is 16 cm is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

