Mensuration (IMO Mathematics Olympiad (SOF) Class 8): Questions 31  37 of 61
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 1029 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 450.00 or
Question number: 31
» Mensuration
Question
Two rectangles ABCD and DBEF are as shown in the figure. The area of rectangle DBEF in square units is________.
Choices
Choice (4)  Response  

a.  40 

b.  90 

c.  60 

d.  70 

Question number: 32
» Mensuration
Question
A right cylindrical vessel is full with water, how many right cones having half diameter and height as that of right cylinder will be needed to store that water?
Choices
Choice (4)  Response  

a.  12 

b.  25 

c.  23 

d.  24 

Question number: 33
» Mensuration
Question
The radius of the cylinder whose lateral surface area is 520 and height 5 cm, is________.
Choices
Choice (4)  Response  

a.  17 cm 

b.  14 cm 

c.  12 cm 

d.  11 cm 

Question number: 34
» Mensuration
Question
Surface area of a cube with edge = 1.2 cm is________.
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 35
» Mensuration
Question
Three solid cubes of sides 1 cm, 6 cm and 8 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: 36
» Mensuration
Question
The ratio of areas of two squares, one having triple its diagonals than the other is________.
Choices
Choice (4)  Response  

a.  5: 3 

b.  2: 3 

c.  2: 9 

d.  9: 1 

Question number: 37
» Mensuration
Question
The ratio of areas of two squares, one having double its diagonals than the other is________.
Choices
Choice (4)  Response  

a.  9: 1 

b.  2: 9 

c.  2: 3 

d.  4: 1 
