Visualising Solid Shapes (Exercise 19.2) RD Sharma Solutions | Mathematics (Maths) Class 7 PDF Download

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Q u e s t i o n : 3
Match the following nets with appropriate solids:
S o l u t i o n :
Here
(a) ? (ii)
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Q u e s t i o n : 3
Match the following nets with appropriate solids:
S o l u t i o n :
Here
(a) ? (ii)
(b) ? (iii)
(c) ? (iv)
(d) ? (i)
Q u e s t i o n : 4
Identify the nets which can be used to make cubes (cut-out the nets and try it):
S o l u t i o n :
Only (ii), (iv) and (vi) form a cube.
Q u e s t i o n : 5
Can the following be a net for a die? Explain your answer.
S o l u t i o n :
Since, in a die, the sum of the number of opposite faces of a die is 7. In the given figure, it is not possible to get the sum as 7. Hence the given
net is not suitable for a die.
Q u e s t i o n : 6
Out of the following four nets there are two correct nets to make a tetrahedron. Identify them.
S o l u t i o n :
For making a tetrahedron, only (i) and (iii) are suitable nets.
Q u e s t i o n : 7
Here is an incomplete net for making a cube. Complete it in atleast two different ways.
S o l u t i o n :
The complete nets for making a cube are
Images
Page 3


          
 
 
   
 
 
 
    
 
    
 
    
 
    
 
    
 
       
                           
  
      
       
    
      
      
Q u e s t i o n : 3
Match the following nets with appropriate solids:
S o l u t i o n :
Here
(a) ? (ii)
(b) ? (iii)
(c) ? (iv)
(d) ? (i)
Q u e s t i o n : 4
Identify the nets which can be used to make cubes (cut-out the nets and try it):
S o l u t i o n :
Only (ii), (iv) and (vi) form a cube.
Q u e s t i o n : 5
Can the following be a net for a die? Explain your answer.
S o l u t i o n :
Since, in a die, the sum of the number of opposite faces of a die is 7. In the given figure, it is not possible to get the sum as 7. Hence the given
net is not suitable for a die.
Q u e s t i o n : 6
Out of the following four nets there are two correct nets to make a tetrahedron. Identify them.
S o l u t i o n :
For making a tetrahedron, only (i) and (iii) are suitable nets.
Q u e s t i o n : 7
Here is an incomplete net for making a cube. Complete it in atleast two different ways.
S o l u t i o n :
The complete nets for making a cube are
Images