Perimeter is the sum of all the sides of a closed figure

A regular octagon is an eight-sided polygon.

All eight sides of regular octagon are equal.

Perimeter of Regular Octagon is equal to eight times the length its side.

**Perimeter of Regular Octagon = 8 x Length of each side**

**Question 1**

Find the perimeter of a regular octagon of side 7cm ?

**Explanation**

A regular octagon is an eight-sided polygon.

All eight sides of regular octagon are equal.

So, Length of each side of regular octagon = 7cm

Perimeter of regular octagon = ( 8 x Length of each side ) units

= ( 8 x 7 ) cm

= 56 cm

**Question 2**

Find the perimeter of a regular octagon of side 15cm ?

**Explanation**

A regular octagon is an eight-sided polygon.

All eight sides of regular octagon are equal.

So, Length of each side of regular octagon =15cm

Perimeter of regular octagon = ( 8 x Length of each side ) units

= ( 8 x 15 ) cm

= 120 cm

**Question 3**

Find the perimeter of a regular octagon of side 25cm

**Explanation**

A regular octagon is an eight-sided polygon.

All eight sides of regular octagon are equal.

So, Length of each side of regular octagon =25cm

Perimeter of a regular octagon = ( 8 x Length of each side ) units

= ( 8 x 25 ) cm

= 200 cm

**Question 4**

Find the perimeter of a regular octagon of side 3.2cm

**Explanation**

A regular octagon is an eight-sided polygon.

All eight sides of regular octagon are equal.

So, Length of each side of regular octagon =3.2cm

Perimeter of a regular octagon = ( 8 x Length of each side ) units

= ( 8 x 3.2 ) cm

= 25.6 cm

**Question 5**

Find the perimeter of a regular octagon of side 5.7cm

**Explanation**

A regular octagon is an eight-sided polygon.

All eight sides of regular octagon are equal.

So, Length of each side of regular octagon =5.7cm

Perimeter of a regular octagon = ( 8 x Length of each side ) units

= ( 8 x 5.7 ) cm

= 45.6 cm