RD Sharma solution class 7 chapter 19 Visualising Solid Shapes Exercise 19.2

Exercise 19.2

Page-19.5

Question 1:

Match the following nets with appropriate solids:

Answer 1:

Here
(a) → (ii)
(b) → (iii)
(c) → (iv)
(d) → (i)

Page-19.6

Question 2:

Identify the nets which can be used to make cubes (cut-out the nets and try it):

Answer 2:

Only (ii), (iv) and (vi) form a cube.

Question 3:

Can the following be a net for a die? Explain your answer.

Answer 3:

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.

Question 4:

Out of the following four nets there are two correct nets to make a tetrahedron. Identify them.

Answer 4:

For making a tetrahedron, only (i) and (iii) are suitable nets.

Question 5:

Here is an incomplete net for making a cube. Complete it in atleast two different ways.

Answer 5:

The complete nets for making a cube are
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