The paint in a container is sufficient to paint an area equal to 9.375 m2. How many bricks, each measuring 22.5 cm × 10 cm × 7.5 cm, can be completely painted with the paint in the container?

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?