- #1

logicgate

- 10

- 2

- TL;DR Summary
- I wanna know why the area formula for a rectangle equals length times width for all positive real numbers, not only for integers.

It's very easy to prove the area formula for a rectangle when both length and width are positive integers, but I cannot prove it when length or width or both are rational or irrational numbers. I need an intuitive proof that is as simple as possible without using very advanced math like calculus.