Subject - Mathematics Topic – Perimeter

CLASS – V -BPREPARED BY –

ANIL KUMAR

K.V.P.L MEERUT CANTT

IRREGULAR SHAPES

REGULAR SHAPES

TRIANGLE SQUARE

RECTANGLE PENTAGON

HEXAGON OCTAGON

The total distance around the outside of

a shape is called boundary/PERIMETER.

8 cm

6 cm

8 cm

6 cm

The total distance around of the shape is8 + 6 + 8 + 6 = 28cm.

First we need to find its length of each side by counting the squares.

1 side of sq. = 1 cm

Now find the perimeter of these shapes. They are

not drawn to scale.

3cm

3cm

3cm

3cm

3cm

3cm

5cm

7cm7cm

3cm

4cm 4cm

4cm 4cm

3cm 3cm

3cm3cm

Perimeter = 18cm Perimeter = 22cm Perimeter = 28cm

What is the perimeter of each of these shapes?

18cm18cm

18cm

22cm

26cm

Finding the

Perimeter

Finding the

Perimeter

Take a walk around the edge of this ground !Take a walk around the edge of this ground !

6cm6cm

10 cm10 cm

The perimeter is…The perimeter is…

32cm !32cm !

6 cm6 cm16 cm16 cm

22 cm22 cm

32 cm32 cm

KV PUNJAB LINES PLAY GROUND

6 + 10 + 6 + 10 =

Take a walk around the edge!Take a walk around the edge!

8cm8cm

10 cm

The perimeter is…The perimeter is…

26 cm !26 cm !8cm8cm

88

1616

26268 + 8 + 10 =

Take a walk around the edge!Take a walk around the edge!

The perimeter is…The perimeter is…

32 cm !32 cm !

This is a regular octagon with sides 4 cm

This is a regular octagon with sides 4 cm

44

88

1212 1616

2020

2424

28283232

Take a walk around the edge!Take a walk around the edge!

The perimeter is…The perimeter is…

60 cm !60 cm !

This shape has sides of 5 cm each

This shape has sides of 5 cm each

1515

3030

4545

6060

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