圆心为(-1, 2),半径为4的圆的方程是( )
A.(x+1)2 +(y-2) 2 =16 | B.(x-1)2 +(y+2) 2 =16 |
C.(x+1)2 +(y-2) 2 =4 | D.(x-1)2 +(y+2) 2 =4 |
推荐套卷
圆心为(-1, 2),半径为4的圆的方程是( )
A.(x+1)2 +(y-2) 2 =16 | B.(x-1)2 +(y+2) 2 =16 |
C.(x+1)2 +(y-2) 2 =4 | D.(x-1)2 +(y+2) 2 =4 |