# Find the equation of the circle in general forn if the diameter is 12 and the center is 8,1? Thabk you for the answer

##### 2 Answers

#### Explanation:

If the diameter is

The general equation of a circle with center

#### Explanation:

The equation of a circle is basically using Pythagoras

It is just that we are using the x-axis value as say

If the centre is at the origin we have

This works very well when centred at at the origin but what if it is elsewhere?

We 'hypothetically' take it back to the origin

So if the centre is at 8 on the x-axis we write

So if the centre is at 1 on the y-axis we write

The length of the radius is unchanged giving: