Here's the question you clicked on:
Romero
Just wondering. Is the surface area of a sphere the circumference of the sphere squared?
I meant the circumference of the regular circle right through the middle. \[2 \pi r\]
I made an error in the explanation. It should have been: No, because the circumference is given by\[2\pi r\]and the surface area is given by\[4πr^2\]The circumference squared would be \[4\pi^2 r^2\]
Area is measured in square units. Volume is measured in cubic units. Surface Area- square units.
How do you derive the surface area of a circle?
you can do it with a double or tripple integral
and Im sure many other ways