If the coordinates of foci and vertices of an ellipse are (±1, 0) and (±2, 0) respectively, then the minor axis is of length ___________.

If the coordinates of foci and vertices of an ellipse are (±1, 0) and

1.	If the coordinates of foci and vertices of an ellipse are (±1, 0) and (±2, 0) respectively, then the minor axis is of length ___________.
Answer» If the coordinates of foci and vertices of an ellipse are (±1, 0) and (±2, 0) respectively, then the minor axis is of length ___________.