India with its area of 3.28 million km² accounts for 2.4 per cent of the world’s land surface area and stands as the ______ largest country in the world.
3 right circular cylinders having the same base radius r (cm) and same height h (cm) are placed one upon the other to form another right cylinder whose radius of base is also r cm. The total surface area (in cm²) of this new right cylinder is: