Mensuration (IMO Mathematics Olympiad Class 8): Questions 7  12 of 61
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Question number: 7
» Mensuration
Question
A child walked 13 m to cross a rectangular field diagonally. If breadth of field is 5 m, its length is________.
Choices
Choice (4)  Response  

a.  11 m 

b.  20 m 

c.  12 m 

d.  15 m 

Question number: 8
» Mensuration
Question
The perimeter of a trapezoid is 80 cm and its nonparallel sides are each equal to 17 cm and its altitude is 15 cm. Its area is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 9
» Mensuration
Question
The radii of the bases of two cylinders are in the ratio of 2: 3 respectively and their heights are in the ratio 1: 2 respectively, find the ratio of their volumes.
Choices
Choice (4)  Response  

a.  3: 2 

b.  1: 3 

c.  3: 4 

d.  2: 3 

Question number: 10
» Mensuration
Question
Three solid cubes of sides 3 cm, 4 cm and 5 cm are melted to form a new cube. Find the surface area of the cube so formed.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 11
» Mensuration
Question
Between a square of perimeter 64 cm and a circle of circumference 64 cm, which figure has larger area and by how much?
Choices
Choice (4)  Response  

a.  Circle, 70 

b.  Circle, 60 

c.  Square, 70 

d.  None of the above 

Question number: 12
» Mensuration
Question
A square garden measuring 5 m on a side is surrounded by a 1 m wide path. What is the area of the path?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

