Sumeet built a conical tent having a floor diameter of 28 m and a perpendicular height of 48 m. What was the length of a 10 m wide canvas that Sumeet needed for the purpose? [Use π = 22/7]

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?