The curved surface area of a right circular cylinder is one-third of its total surface area. If the radius of the cylinder is 8 cm, then the volume of the cylinder (in cm3) is:

Find the approximate volume and surface area of a sphere of radius 6 cm. (Use π = 227)

Ram has two spherical balls of radius 10.5 cm each and Meena has six spherical balls of radius 7 cm each. What is the total volume of the balls that Meena has?