If the breadth of a rectangle is half of its length, its area is 288 cm2. If the breadth is changed to 34th of the original and the length is changed to 32th of the original, then what is the new area of the rectangle?

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?