Question

A stop sign is in the shape of an octagon. Find the perimeter if each side is 2a + 1 units

Answer 1

Explanation:

Side of the octagon

An octagon has 8 sides. Each side is 2a + 1 units.

8(2a + 1)

= 16a + 8

Answer 2

Given,

• Side of the octagon = ( 2a + 1 ) units

» Perimeter means total length of its boundary.

→ Octagon has 8 sides.

So,

→ Perimeter of Octagon = Length of 8 sides

→ Perimeter of Octagon = 8 ( 2a + 1 ) units

→ Perimeter of Octagon = 16a + 8 units

Therefore,

• Perimeter of the octagon is
  `\bf 16a + 8` units.