Calc 1 optimization

[junior forge]

I'm confused on how they go to that solution. I understand the perimer is
p = 2w+2l but how do I format the question as a function of 1 variable and find the value of best minimization?

[tardy canopy]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with: ```diff
   +close

[dull bay]

1. You're wrong about the perimeter.
2. The area is constant.

[river hazel]

l×w = 11 600
l = 11 600/w
Perimeter = 2l+2w+w = 2l+3w
P(w) = 2×(11 600/w)+3w
P(w) = (23 200/w)+3w
Min -> P'(w) = 0, P''(w) < 0
solve for w to get the dimensions

[junior forge]

thank you guys

+close