What is the radius (in m) of a circular field whose area is equal to six times the area of a triangular field whose sides are 35 m, 53 m, and 66 m? (Take 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?