Posted by steph on .
The length of a rectangle is 5cm more than twice the width. The perimeter of the rectangle is 34 cm. Find the dimensions of the rectangle. So confused on how to do this problem please help me thanks.

math 
Dr. Jane,
Perimeter = L + L + W + W
or P = 2L + 2W
L = 5+ 2w
P = 2(5+2W) + 2W
I replaces the L in the original formula with the 5 + 2w because that equals L according to the problem.
34 = 10 + 4W + 2W
Just solve for W.
And then you can find L. 
math 
steph,
Thanks

math 
Dr. Jane,
You are welcome.

math 
randy,
the length of marshalls rectangular poster is 2 times its width .if the perimeter is 24 inches what is the area of the poster?