IMO Mathematics Olympiad Class 10: Questions 798  801 of 908
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Question number: 798
Question
The areas of two concentric circles are and respectively. The width of the ring is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 799
Question
What is the length of the iron beam?
Statements

The volume of iron beam is also the beam is long, wide.

Iron width of iron beam is 5 meter.
Choices
Choice (4)  Response  

a.  All of the statements are sufficient. 

b.  Only statement Ⅰ is sufficient, while others are not sufficient. 

c.  None of the statements are sufficient. 

d.  Either one of the statements is sufficient. 

Question number: 800
» Triangle, Circle & Constructions
Question
mnjfdikjdkl’. v; . /ovfvf xcada’
Choices
Choice (4)  Response  

a.  Only 2 

b.  2 and 3 

c.  Only 1 

d.  1 and 2 

Question number: 801
» Triangle, Circle & Constructions
Question
QR is the diameter of a semicircle. The sides PQ and PR of a triangle PQR meet the semicircle in A and B respectively. AB subtends at the center of the semicircle. The is ________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

