A sphere of radius 𝑟 cm is packed in a box of cubical shape. What should be the minimum volume (in cm3) of the box that can enclose the sphere?

Rice, a versatile and inexpensive source of carbohydrate, is a critical component of diet worldwide. Climate change, causing extreme weather, poses a threat to...

Pipes P and Q can fill a storage tank in full with water in 10 and 6 minutes, respectively. Pipe R draws the water out from the storage tank at a rate of 34 l...