how do you solve this?
y = mx + b - b - b y - b = mx m m(y-b)/m = x S = 2πr² + 2πrh S = 2πr(r) + 2πr(h) S = 2πr(r - h) 2πr 2πr S/2πr = r - h - r - r (S/2πr) - r = -h(-S/2πr) + r = h
