A solid cube of side 4 cm is cut into smaller cubes of side 1 cm. What is the ratio of the total surface area of the original large cube to the sum of the total surface areas of all the smaller cut-out cubes?

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?