Question

Is the equation correct?

A circle has a diameter of 12 with a center translated 18 units left and 7 units down from the origin.

1. Write an equation for the circle.


(x + 18) ^2 + (y + 7)^2

Answer 1

( x + 18 )² + ( y + 7 )² = 12²

( x + 18 )² + ( y + 7 )² = 144

Answer 2

I am sure Bosnian meant:
( x + 18 )² + ( y + 7 )² = 6² , since the radius is 6, not 12

( x + 18 )² + ( y + 7 )² = 36