Nine identical cubes, each with an edge of 3 cm, are joined in a straight line to form a cuboid. What is the total surface area (in cm2) of the resulting cuboid?

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?