###### Asked in ChemistryElements and Compounds

Chemistry

Elements and Compounds

# P2L 2w is the formula for what?

## Answer

###### Wiki User

###### October 22, 2009 3:32PM

The equation is P=2L * 2W

Which stands for Perimeter=2(length) * 2(width)

## Related Questions

###### Asked in Math and Arithmetic, Club Penguin

### How do you solve questions like P2L 2W solve for W?

First, I am assuming you mean P = 2L + 2W, solve for W. If so,
then see below!
You solve equations the same way, whether they have multiple
variables or not:
Distribute, Combine Like Terms, Move the variable you are
isolating to one side, Add or Subtract, then Multiply or
Divide.
Let's show how this equation is very much like an equation
having only one variable:
28 = 20 + 2W
-20 -20
8 = 2W
÷2 ÷2
4 = W
So, if you get stuck, just "fake" the variables you aren't
solving for into being random numbers. Solve your "fake" equation
like you would any equation. Then use the same steps in your
original "variable" equation.
P = 2L + 2W
-2L -2L
P-2L= 2W
÷2 ÷2
(P-2L)/2 = W

###### Asked in Math and Arithmetic, Algebra

### How do you turn this into an equation The perimeter of a rectangle is 126cm The rectangle is twice as long as it is wide What are the dimensions?

the formula for the perimeter of a rectangle is p = 2W + 2L,
where L is the length and W is the width, so your first equation is
126 = 2W + 2L
"twice as long as it is wide" means that the length L is 2 times
the width W, so your second equation is L = 2W
In order to solve for the dimensions, you can substitute L for
2W in the first equation to get:
126 = L + 2L
126 = 3L
L = 126/3
L = 42
and because L = 2W:
42 = 2W
W = 42/2
W = 21