Let V1 be the volume of a cuboid with sides 3.5, 3.1, and 2.1 units. A cube is formed such that its side is the average of the sides of the cuboid. If V2 is the volume of the cube, then V2 is equal to:

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?