I need help with solving these problems find the center (h,k) and radius of each circle and find the intercept if any. number 28, 30, 32, 34, 36, 38, 40 with the steps

27. x2 + y2 = 4 28. x2 + (y - 1)2 = 1 29. 2(x - 3)2 + 2y2 = 8 30. 3 (x + 1)2 + 3(y - 1)2 = 6 31. x2 + y2 - 2x - 4y - 4 = 0 32. x2 + y2 + 4x + 2y - 20= 0 33. x2 + y2 + 4x - 4y - 1 = 0 34. x2 + y2 - 6x + 2y + 9 =0 35. x2 + y2 - x + 2y+ 1 =0 36. x2 + y2+ x + y - = 0 37. 2x2 + 2y2 - 12x + 8y - 24 = 0 38. 2x2 + 2y2 + 8x + 7 = 0 39. 2x2 + 8x + 2y2 = 0 40. 3x2 + 3y2 - 12y = 0