Which equation can be used to find the perimeter of a regular octagon with sides of length 12?

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Answer 1 · 2016-08-03T22:18:02

$P e r i m e t e r = 8 \times 12 = 96$ $Perimeter = 8 xx 12 = 96$

In any regular shape, all the sides are the same length.
Perimeter = the sum of all the sides.

"Perimeter = Side + side +side + ......" for as many sides as the shape has.

For an equilateral triangle: $P = 3 \times side = 3 s$ $P = 3 xx "side" = 3s$

For a square: $P = 4 \times side = 4 s$ $P = 4 xx "side" = 4s$

For a regular octagon there are 8 equal sides, so

$P = 8 \times side = 8 s$ $P = 8 xx "side" = 8s$

A general formula for the perimeter of a regular figure would be:

$P = n \times side = n \times s$ $P = n xx "side" = nxxs$

$n$ $n$ = number of sides. and $s$ $s$ = the length of each side.

IN this case

$P e r i m e t e r = 8 \times 12 = 96$ $Perimeter = 8 xx 12 = 96$