The equation of a circle is given below. (x+4)^{2}+(y-6)^{2} = 48(x+4) 2 +(y−6) 2 =48left parenthesis, x, plus, 4, right parenthesis, squared, plus, left parenthesis, y, minus, 6, right parenthesis, squared, equals, 48 What is its center? What is its radius?