A conical tent of radius 7 m and height 24 m is being made. If the cloth costs ₹ 10 per square metre, then what is the total cost to cover it from the outside? (Use π = 227)

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?