Surface Area and Volumes (IMO Mathematics Olympiad (SOF) Class 9): Questions 49  53 of 104
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Question number: 49
» Surface Area and Volumes
Question
The parallel sides of a trapezium are 55 cm and 85 cm and nonparallel sides are 24 cm and 28 cm. the approximate area of trapezium is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 50
» Surface Area and Volumes
Question
In the given figure, PQ is a diameter of a circle with center O and. The area of the shaded region________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 51
» Surface Area and Volumes
Question
In the given figure, RSTV is a square inscribed in a circle with center O and radius r. The total area of shaded region is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 52
» Surface Area and Volumes
Question
The altitude drawn to the base of an isosceles triangle is of length 8 cm and the perimeter is 32 cm. the area of the triangle is ________
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 53
» Surface Area and Volumes
Question
A spherical ball of lead, 3 cm in diameter is melted and recast into three spherical balls. The diameter of two of these is 1.5 cm and 2 cm respectively. The radius of the third ball is________.
Choices
Choice (4)  Response  

a.  3 cm 

b.  2.5 cm 

c.  3.5 cm 

d.  2.66 cm 
