The small circle has equation #x^(2)+y^(2)-2x-4y-4=0#. The great circle equation have the same radius with the diameter of the small circle is ...?
1 Answer
If I understand your question correctly, the large circle has a radius of 6. If the two circles share the same center, the equation of the large circle is
Explanation:
Get the equation of the circle from general form to standard form by completing the two squares:
Rearrange terms, move constant to other side of the equation:
Complete the square for the
Simplify
This is the standard form of the circle.