Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 878  883 of 989
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Question number: 878
Question
MCQ▾A cylindrical vessel of diameter 72 cm has some water in it. A cylindrical iron piece of diameter 12 cm and height 36 cm is dropped in it. After it was completely immersed, the raise in the level of water is ________.
Choices
Choice (4)  Response  

a.  3 cm  
b.  6 cm  
c.  1 cm  
d.  9 cm 
Question number: 879
Question
MCQ▾With a bucket of radius 28 cm and height 2 cm, 6 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: 880
Question
MCQ▾The value of the surd is
Choices
Choice (4)  Response  

a. 
 
b.  8  
c. 
 
d. 

Question number: 881
Question
MCQ▾The base of an isosceles triangle is 14 cm and its perimeter 108 cm. Then its area is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question number: 882
Question
MCQ▾Correct the perimeter of the figure given below to one decimal place.
Image Title: Image of a rectangle with quarter cut at all four corners
Image Description: Representing the image of a rectangle with quarter cut at all four corners
Choices
Choice (4)  Response  

a.  28.0 m  
b.  28.3 m  
c.  29.3 m  
d.  29.1 m 
Question number: 883
Question
MCQ▾The sum of a rational and an irrational number is
Choices
Choice (4)  Response  

a.  A rational number  
b.  An integer  
c.  A whole number  
d.  An irrational number 