The perimeter of a retangle is 40m. The length is 8m more than twice the width. find the demensions. what is the lenght and width please?

Question

anonymous · Answer

it is 16 lenght and 4 width?

anonymous · Answer

Let p= perimeter, l=length, and w=width.  

p=2l+2w=40
l=8+2w
40=2(8+2w) +2w

Divide both sides by two:
20=8+2w+w=8+3w

Subtract 8:
12=3w

w=12/3=4

anonymous · Answer

don't forget your units!

anonymous · Answer

So what does that make the width and what does that make the length? please I will give a medal!!!

anonymous · Answer

p = 2(w + h)
40 = 2(4 + h)
40 = 8 + 2h
32 = 2h
h = 16

anonymous · Answer

I only need to the width and the length!

anonymous · Answer

W = 4, L = 16

anonymous · Answer

that is what I put first!