Chapter 13: Visualising Solid Shapes

Solution:-

The given net cannot be folded as a cube.

Because, it can be folded as below,

(ii)

Solution:-

The given net can be folded as a cube.

Because, it can be folded as below,

(iii)

Solution:-

The given net can be folded as a cube.

Because, it can be folded as below,

(iv)

Solution:-

The given net can be folded as a cube.

Because, it can be folded as below,

(v)

Solution:-

The given net cannot be folded as a cube.

Because, it can be folded as below,

(vi)

Solution:-

The given net can be folded as a cube.

Because, it can be folded as below,

Solution:-

(i)

By observing the above figure the sum of the opposite faces is equal to 7.

So, the given net can be folded into a net of dice.

(ii)

By observing the above figure the sum of the opposite faces is equal to 7.

So, the given net can be folded into a net of dice.

Solution:-

The given net is folded as dice is shown in figure below,

No, this cannot be a net for a die.

By observing the figure we can say that, one pair of opposite face will have 1 and 4, another pair of opposite face will have 3 and 6 the sum of these two opposite faces are not equal to 7.

Solution:-

In the given net there are 3 faces and it can be completed as shown below,

Solution:-

(a) (ii)

Because, the net (ii) can be folded as a square.

(b) (iii)

Because, the net (iii) can be folded as a cylinder.

(c) (iv)

Because, the net (iv) can be folded as a cone.

(d) (i)

Because, the net (i) can be folded as a pyramid.