Related Rates (differentiating)

[soul5]

Homework Statement

How fast is the area of a square increasing when the side is 3 meters in length and growing at a rate of 0.8meter/minute?

Homework Equations

SA=LW
L=3
dL/dt=0.8

The Attempt at a Solution

I have no clue how to start this and I'm bad at word problems.

 

[rocomath]

Wrong formula, find the correct formula and we'll proceed.

 

[Dick]

Wrong formula, find the correct formula and we'll proceed.

It's not really wrong, if it's square then just set W=L. So SA=L^2. Now we can proceed, right?

 

[rocomath]

It's not really wrong, if it's square then just set W=L. So SA=L^2. Now we can proceed, right?

Eh, I can somewhat agree ... but I still assume OP didn't realize W=L :p (noticing in the post, L=3)