SOLUTION: How do I find the perimeter of a regular polygon. I need to write an equation to solve and my worksheet gave me two of the polygon sides which are 5(x+2) and 7x+4. How do I set up

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Question 897239: How do I find the perimeter of a regular polygon. I need to write an equation to solve and my worksheet gave me two of the polygon sides which are 5(x+2) and 7x+4. How do I set up my equation and then once I solve for x I would just add all of the polygon sides up, correct? Thank you!
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
How do I find the perimeter of a regular polygon. I need to write an equation to solve and my worksheet gave me two of the polygon sides which are 5(x+2) and 7x+4. How do I set up my equation and then once I solve for x I would just add all of the polygon sides up, correct?
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All sides of a regular polygon are equal, that's what "regular" means.
If those are 2 of the sides, then
5(x+2) = 7x+4 and you can solve for x
5x+10 = 7x+4
x = 3
--> sides are 25 in length
Perimeter = 25 * number of sides.
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