SOLUTION: A=2rh+2r^2; solve for h This is how I worked it out. A=2rh+2r^2 A-2r^2=2rh+2r^2-2r^2 A-2r^2=2rh A-2r^2/2r=2rh/2r A-r=h

Algebra ->  Equations -> SOLUTION: A=2rh+2r^2; solve for h This is how I worked it out. A=2rh+2r^2 A-2r^2=2rh+2r^2-2r^2 A-2r^2=2rh A-2r^2/2r=2rh/2r A-r=h       Log On


   

Question 97462: A=2rh+2r^2; solve for h
This is how I worked it out.
A=2rh+2r^2
A-2r^2=2rh+2r^2-2r^2
A-2r^2=2rh
A-2r^2/2r=2rh/2r
A-r=h
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
2rh+2r^2=A; solve for h
subtract 2r^2 from each side. 2rh=A-2r^2
divide 2r into each side. h=%28A-2r%5E2%29%2F2r
.
you did well.
Your only mistake was your last step.
if you divide 2r into you have to divide into both A and -2r^2 and you get %28A%2F2r%29-2r which is equivalent to my answer.
Ed