- #1
davon806
- 148
- 1
Homework Statement
Please see the attached.
It is a badly drawn sphere
By common sense,the area of the shaded region in the sphere = area of square = r^2
But can anyone show me the mathematical proof?
Moreover,does it apply to the reality?
Imagine when you bend a square sheet with length = r,does the length of curve = r after you bend it?When you bend a substance(with a small force),its molecular structure will change slightly,which means the length of side of the substance will change slightly?
I don't know whether I should post this here.If I post it at the wrong place,please move this
thread to the correct position.Thx :)