(d) \(\frac{x}{y}:1 \) or \(\frac{y}{x}:1 \)
Let the radii of the two cylinders be r1 and r2 respectively.
Then, 2πr1 = 2x and 2πr2 = 2y
⇒ r1 = \(\frac{x}{π}\) and r2 = \(\frac{y}{π}\)
Also, the height h1 = 2y and h2 = 2x
∴ If V1, V2 and S1, S2 be the respective volumes and curved surface areas of these cylinders, then,