A rectangle has an area of 96 cm2 and a perimeter of 56 cm. If a rhombus is formed by sequentially joining the midpoints of the sides of this rectangle, what is the area of the rhombus?

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?