Question

Formulas for cirlces?

Answer 1

There are more than one

Answer 2

\[(x-a)^2+(y-a)^2=r^2\]

is most used

Answer 3

\[Area = \pi r ^{2}\]
\[Circumference = 2\pi r\]

Answer 4

Thanks! and imranmeah91, what does that equation solve for?

Answer 5

It is a sets of points that makes up a circle

Answer 6

Thank you!

Answer 7

welcome

Answer 8

A circle is the set of points \[(x,y)\] that are a constant distance \[r\] from a point\[(a,b)\] this set is etermined by the equations \[(x-a)^2-(y-b)^2=r^2\

Answer 9

thank you all very much!