I need help finding the perimeter of a rectagle...?

Question

well kinda...

i have a rectangle and the perimeter...

but i have to figure out how long each side is.

the numbers they give me are - 2x for one side and (x+3) for another.

if u could help me that would be great!!

Answer 1

Here's a list of formulas. Use the one for perimeter and work out your answer.

http://www.science.co.il/formula.asp

Answer 2

Perimeter = 2 * (length + width)

With the perimeter(P)  given plug in the variables for the lenght and width and solve for unknown.

P = 2 * (2x + (x+3))

   = 2 * (3x + 3)

   = 6x + 6

P - 6 = 6x

x = (P - 6) / 6

Now plug in value of x to get value for each side