VO: Ambrose has just got a job at the world famous Grecian Pizza Parlour. He’s being trained in all aspects of pizza making. I don’t think this is part of the training though. Pizza Boss: Coughs. What ...

The ability to round a number to a number of decimal places or to a number of significant figures is essential if answers are to be written to the correct degree of accuracy asked for in a question.

Most wire or string is made with a circular cross section of some particular radius and diameter. The area of that cross section is the well known A = pi*R² which is colloquially pronounced as “pie ...