Inhaling the smoke from a burning _________ could _________ you quickly.

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?

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...