A rectangular garden is 90 m long and 75 m broad. A path 5 m wide is built outside and all around it. Find the area of the path in hectares. (1 hectare = 10,000 m2)

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?