Answer:

Step-by-step explanation:
The question is not correct (particularly the expression for the area)
A=2lh+2wh
Now we are expected to solve for l, that is we are going to make l subject of the formula, we have
let us take the second term on the RHS to the LHS

we can now divide both sides by 2h we have

hence the expression for the length is 
Answer:
uhhh ok
Step-by-step explanation:
What grade are u? I'm just asking cause the formulas are going with grade I could help if u want me too