A circle has the equation (x+11)2+(y+6)2=324.

Question

What are the coordinates of the center and the length of the radius?

Responses
The coordinates of the center are (−11,−6), and the length of the radius is 18 units.
The coordinates of the center are (−11,−6), and the length of the radius is 324 units.
The coordinates of the center are (11,6), and the length of the radius is 18 units.
The coordinates of the center are (11,6), and the length of the radius is 324 units.

Answer 1

The coordinates of the center are (-11, -6), and the length of the radius is 18 units.