SOLUTION: what hapens to the perimeter of a rectangle if we multiply both its length and widht by 2? by 3? by 10? by n? I really don't know where to start here.

Algebra ->  Rectangles -> SOLUTION: what hapens to the perimeter of a rectangle if we multiply both its length and widht by 2? by 3? by 10? by n? I really don't know where to start here.      Log On


   

Question 571188: what hapens to the perimeter of a rectangle if we multiply both its length and widht by 2? by 3? by 10? by n? I really don't know where to start here.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
what hapens to the perimeter of a rectangle if we multiply both its length and widht by 2? by 3? by 10? by n? I really don't know where to start here.
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Start with the formula:
P = 2(L+W)
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P/2 = (L+W)
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Now double length and width:
Multiply both sides by 2 to get:
P = (2L+2W) ; The perimeter doubled
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Multiply both sides by 3 to get:
3(P/2) = 3L + 3W : The perimeter is multiplied by 3
etc.
Cheers,
Stan H.
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