$2\pi r h = 120\pi \text{ cm}^2$

$2\pi r^2 + 2\pi r h = 50\pi + 120\pi = 170\pi \text{ cm}^2$

$\pi r^2 h = 300\pi \text{ cm}^2$

$2\pi r^2 + \pi r h = 50\pi + 60\pi = 110\pi \text{ cm}^2$