The distance from the center of the circle x square + y square = 25 to the straight line x + y = 0 is—— Write down the specific process

The distance from the center of the circle x square + y square = 25 to the straight line x + y = 0 is—— Write down the specific process

(x-0)²+(y-0)²=25
So the center of the circle is (0,0)
He's on X + y = 0
So close up is 0