The length and breadth of a rectangle are 48 cm and 21 cm respectively. The side of a square is two-thirds the length of the rectangle. The sum of the areas of the square and the rectangle (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?