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Perimeter of a Square

We will discuss here how to find the perimeter of a square. Perimeter of a square is the total length (distance) of the boundary of a square.

In a square all the sides are of equal lengths.

Perimeter of a Square

Hence, perimeter of a square = 4l

We know that all the sides of a square are equal.

Perimeter of a Square

Perimeter of the square ABCD

                   = AB + BC + CD + AD

                   = 2 cm + 2 cm + 2 cm + 2 cm

                   = (2 Γ— 4) cm

                   = 8 cm

Perimeter of a square is 4 times of s side.

Perimeter of a square = 4 Γ— length of a side.


A square is a four sided figure in which

       β— all the four sides are equal (length = breadth)

       β— all the angles are equal to 90Β° (right angle)

Perimeter of a Square

1st method:

Perimeter of a square PQRS

                  = side + side + side + side

                  = 5 cm + 5 cm + 5 cm + 5 cm

                  = 20 cm


2nd method:

Perimeter of a square = 4 times side

                                = 4 Γ— side

                                = 4 Γ— 5 cm

                                = 20 cm


Therefore, Perimeter of a square = 4 Γ— length of one side


Word Problems on Perimeter of a Square:

Let us consider some of the examples on perimeter of a square:

Examples on Perimeter of a Square

1. Each side of a square is 2.5 cm. Find its perimeter.

Solution:

Side = 2.5 cm

Therefore, perimeter of a square = 4 Γ— length of a side

                                                = (4 Γ— 2.5) cm

                                                = 10 cm


2. A rope of length 96 m was used to fence a square garden. What is the length of the side of the garden?

Solution:

Perimeter of the garden = Length of the rope = 96 m

We know that perimeter of a square = 4 Γ— length of a side

So, 4 Γ— length of a side = 96 m

           Length of a side = 964 m = 24 m

Therefore, length of the one side of the square shape garden is 24 m.



3. Find the perimeter of a square shaped playground whose each side length 12 m.

Solution:

We know a square has four equal sides. So, we can easily calculate the perimeter of a square.

The formula for finding the perimeter of a square is:

P = 4 Γ— length of a side

   = 4 Γ— 12 m

   = 48 m


Perimeter of a Square

4. Each sides of a paper sheet is 14 ft. Find its perimeter.

Solution:

Given: Side length is 14 ft.

Perimeter of a square is = 4 Γ— side

                                   = 4 Γ— 14 ft

                                   = 56 ft


5. Find the perimeter of the square PQRS whose one side is 10.5 m.

Perimeter of a Square Problems

Solution:

Side of the square = 10.5 m

Perimeter of the square = 4 Γ— side

                                   = 4 Γ— 10.5

                                   = 42 m


6. Find the perimeter of the square PQRS whose one side is 4 cm.

Perimeter of Square

Solution:

The perimeter of the square

= 4 Γ— side

= 4 Γ— 4 cm

= 16 cm


7. The perimeter of a square is 20 cm. Find the length of each side of the square.

Solution:

Perimeter of the square            =   4 Γ— side of the square

i.e. 4  side of the square           =   20 cm

But we have 4 Γ— 5                   =   20   (Note: 20 Γ— 4 = 5)

Therefore, side of the square    =   5 cm


8. How to find the perimeter of a square?

Find the perimeter of the figure:

Find the Perimeter of a Square

Solution:

A square has four sides.

To find the perimeter of a square, we measure all the four sides of the figure and add them together.

In the above given figure, all the sides length = 4 cm

Therefore, perimeter of the square = 4 cm + 4 cm + 4 cm + 4 cm

                                                   = 16 cm



Worksheet on Perimeter of a Square:

1. Find the perimeter of squares having sides as follows.

(i) 8 cm

(ii) 6 cm

(iii) 10 cm

(iv) 12 cm

(v) 15 cm


Answer:

1. (i) 32 cm

(ii) 24 cm

(iii) 40 cm

(iv) 48 cm

(v) 60 cm


2. The perimeter of a square photo frame is 12 cm. What is the length of its side?

Answer:

2. 3 cm


3. A square has a perimeter of 24 cm. What is the length of each side?

Answer:

3. 6 cm


4. Find the perimeter of each of the following square using formula:

Worksheet on Perimeter of a Square

Answer:

4. (i) Perimeter of the square 24 cm.

(ii) Perimeter of the square 28 cm.

(iii) Perimeter of the square 24 cm.


You might like these

● Related Concepts

● Units for Measuring Length

● Measuring Instruments

● To Measure the Length of a Line-segment

● Perimeter of a Figure

● Perimeter of a Triangle

● Perimeter of a Rectangle

● Perimeter of a Square

● Unit of Mass or Weight

● Examples on Unit of Mass or Weight

● Units for The Measurement of Capacity

● Examples on Measurement of Capacity

● Measurement of Time

● Read a Watch or a Clock

● Antemeridian (a.m.) or Postmeridian (p.m.)

● What Time it is?

● Time in Hours and Minutes

● 24 Hour Clock

● Units of Time

● Examples Units of Time

● Time Duration

● Calendar

● Reading and Interpreting a Calendar

● Calendar Guides us to Know




4th Grade Math Activities

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