Recent content by JJV19

thanks a lot both of you lol .. it's funny how the simple mistakes often cause the most grief

This is what i have so far SA = 2(pi)r^2 + 2(pi)r(245.45 / (pi)r^2) Derivative of SA = - 490.9r^2 + 4(pi)r 0 = -490.9r^2 + 4(pi)r and I'm stuck at this step.. I've tried a bunch of things to try and solve for r but i can't seam to get a logical answer for the radius of the minimized...