Nets of a Solids

We will learn how to use nets to find the surface area of a solid?

Let us take a box made of cardboard. If we cut open the box and flatten it out, the flat shape is called the net of the box. A net is a two-dimensional shape that can be folded to make a three-dimensional shape. The net of a solid is a diagram drawn on a paper which when cut and folded along the lines can be used to construct a solid shape.

For example, the following diagram shows nets of a cube.

Nets of a Cube

Not every arrangement of six squares on a paper produces a net for a cube. For example, a row of six squares does not fold to form a cube.

Net for a Cube

The net of a cylinder without top and bottom would look like a rectangle.

Net of a Cylinder without Top and Bottom

The net of a cone would look like as given below.

Net of a Cone

Questions and Answers on Nets of a Solids:

1. Match the object to its net.

Match the Object to its Net

Answer:

(i)  3.

(ii)  1.

(iii)  4.

(iv)  2.



2. Color the correct net.

Color the Correct Net

3. Based on the nets given, complete the given data.

Shapes and Net

Answer:

Shapes

Net

Faces

Edges

Vertices

Cube

(ii)

6

12

8

Cuboid

(iii)

6

12

8

Cone

(iv)

2

1

1

Cylinder

(i)

3

2

1


4. Choose the right answer.

The number of faces in a cylinder is:

(a) 3

(b) 4

(c) 5

(d) 6


Answer: (c)


5. Which of the given is not the correct net for a cube?

Not the Correct Net for a Cube

Answer:

(i)







7th Grade Math Problems

8th Grade Math Practice

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