Find the equation of a sphere which passes through `(1,0,0)(0,1,0)a n d(0,0,1),` and has radius as small as possible.

Find the equation of a sphere which passes through (1,0,0)(0,1,0) and (0,0,1) and has radius as small as possible.

Find the equation of the sphere which passes through the point (1,0,0),(0,1,0) and (0,0,1) and has its radius as small as possible.

Find the equation of the sphere passing through (0,0,0),(1,0,0),(0,1,0)a n d(0,0,1)dot

Find the equation of the circle which passes through (1, 0) and (0, 1) and has its radius as small as possible.

Find the equation of the circle which passes through (1,0) and (0,1) and has its radius as small as possible.

Find the equation of the circle which passes through (1, 0) and (0, 1) and has its radius as small as possible.

Find the equation of the circle which passes through (1, 0) and (0, 1) and has its radius as small as possible.

Find the equation of the sphere passing through (0,0,0),(1,0,0),(-,1,0) and (0,0,1)