Question

. Find the perimeter of a regular pentagon with each side measuring 4.5 inches.

Answer 1

Answer: 22.5 inches

Explanation:

• the general formula for finding perimeter is
  `p=s+s+s...`
• a pentagon contains 5 sides

`p=s+s+s+s+s`

• note that this is a regular pentagon so it must contain 5 congruent sides
• each side will be 4.5 inches
• the formula can be changed to
  `5(s)` and solved:

`5(4.5 in)=p`

∴ 22.5 inches = perimeter of the pentagon