Posted by **andrew** on Wednesday, February 20, 2013 at 7:13pm.

The perimeter of a regular octagon is p. write an expression that represents the length of one side of the octagon?

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**JJ**, Wednesday, February 20, 2013 at 7:14pm
An octagon has 8 sides.

Perimeter = 8 times length of 1 side.

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**andrew**, Wednesday, February 20, 2013 at 7:16pm
so is it 8 times x?

8*x?

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**JJ**, Wednesday, February 20, 2013 at 7:17pm
no we have p = perimeter

You want to use p and 8.

Do you multiply or divide?

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**lina**, Wednesday, February 20, 2013 at 7:19pm
oh you multiply?

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**andrew**, Wednesday, February 20, 2013 at 7:19pm
YOU MULTIPLY!

right..?

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**lina**, Wednesday, February 20, 2013 at 7:20pm
yes

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**JJ**, Wednesday, February 20, 2013 at 7:20pm
no, you would divide.

Let's say the perimeter is 40?

Would it make sense to say a side is 320

or does it makes sense to say a side is 5?

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**andrew**, Wednesday, February 20, 2013 at 7:21pm
that makes sense so it would be 8/p then?

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**JJ**, Wednesday, February 20, 2013 at 7:22pm
NO.. p/8

40/8

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**andrew**, Wednesday, February 20, 2013 at 7:24pm
Ohhhhh that makes much more sense thank you so just p/8 or p/8=x ?

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**JJ**, Wednesday, February 20, 2013 at 8:09pm
Right. Glad it makes sense.

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**emily**, Monday, October 14, 2013 at 8:07pm
Dont know

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