MathematicsSurface Areas & Volumes (NSTSE (National Science Talent Search Exam Unified Council) Class 9): Questions 1  6 of 113
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Question number: 1
» Mathematics » Surface Areas & Volumes
Question
A cylindrical rod whose height is 4 times of its radius is melted and recast into spherical balls of same radius. The number of balls will be
Choices
Choice (4)  Response  

a.  12 

b.  2 

c.  6 

d.  3 

Question number: 2
» Mathematics » Surface Areas & Volumes
Question
The cost of painting the TSA of cone at is Rs. 35.2. The volume of the cone its slant height being 50 cm is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 3
» Mathematics » Surface Areas & Volumes
Question
With a bucket of radius 14 cm and height 8 cm, 2 buckets of lime was poured to form a conical heap. If its area is , the canvas required to cover it is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 4
» Mathematics » Surface Areas & Volumes
Question
The lateral surface area of cylinder is and base area . Then its volume is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 5
» Mathematics » Surface Areas & Volumes
Question
With a bucket of radius 7 cm and height 4 cm, 4 buckets of lime was poured to form a conical heap. If its area is , the canvas required to cover it is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 6
» Mathematics » Surface Areas & Volumes
Question
From a circle of radius 30 cm a sector with angle is cut out and its bounding radii are bent so as to form a cone. Then its volume is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

