Question

What is the length of thread required to make a regular octagon of side 14 cm each?

• A. 8 cm
• B. 16 cm
• C. 32 cm
• D. 64 cm

Answer 1

The correct option is C 32 cm

The length of thread required to make a regular octagon is equal to the perimeter of the octagon.
The octagon has 8 sides so the perimeter is equal to 8a, where 'a' is the side of the regular octagon.
Here a = 14 cm
So the perimeter is equal to $8\times 14$ = 112 cm.
The length of thread required will be 112 cm.