The side face of a cuboid is a square of area 49 cm2 and the longer edge of the four rectangular faces is of length 16 cm. The area of each rectangular face (in cm2) 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?