Mathematics [NSTSE (National Science Talent Search Exam Unified Council) Class 9]: Questions 187  190 of 989
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Question 187
Question
MCQ▾A regular decagon (10 sides) is inscribed in a circle. The angle that each side of the decagon subtends at the center is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d. 

Question 188
Question
MCQ▾A, B, C are the three angles of a triangle. If , then are
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  All of the above 
Question 189
Question
MCQ▾The ratio of the perimeter of two squares is 5: 4. The ratio of their areas in the same order is ________.
Choices
Choice (4)  Response  

a.  25: 4  
b.  4: 25  
c.  4: 5  
d.  25: 16 
Question 190
Question
MCQ▾As shown in blow given figure of a circle. If the length of arc ABC is 24 cm then the length of arc ADC is
Choices
Choice (4)  Response  

a.  12 cm  
b.  Cannot be determined from given data  
c.  24 cm  
d.  18 cm 