A solid cube of lead has an edge of 66 cm. It is melted and recast into spherical bullets, each of diameter 6 cm. How many such bullets can be made? (Use π = 227)

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?