Quick question about finding distance between the centres of 2 circles?

[nukeman]

Homework Statement

Lets say you have the equation of 2 circles ok, and it asks you to find the distance between the centres of the 2 circles. Is that what you do...?

1) Find the center of each circle by completing the sqaure.

2) Enter those 2 centres into a distance formula: d = √(x2-x1)^2 + (y2-y1)^2

Is that it?

Homework Equations

The Attempt at a Solution

 

[Mark44]

Homework Statement

Lets say you have the equation of 2 circles ok, and it asks you to find the distance between the centres of the 2 circles. Is that what you do...?

1) Find the center of each circle by completing the sqaure.

2) Enter those 2 centres into a distance formula: d = √(x2-x1)^2 + (y2-y1)^2

Is that it?

Yes.

 

[camjohn]

2) Enter those 2 centres into a distance formula: d = √(x2-x1)^2 + (y2-y1)^2

Not sure if you typed it wrong or not. Just to clarify, the equation is: √((X₂-X₁)²+(Y₂-Y₁)²)