Want solution of sum 4

Want solution of sum 4 jdthe equation Of the cifcle which has A (1, 3) and B 4, 5) as opposite ends ofa diameter. fiDdalso the equation Of the perpendicular diameter. the equation to the circles which pass through the origin and cut off intercepts equal to 4, 2a and 2b from the x-axis and the y-axis respectivel . equatioh of the circles which touch the axis of x at a distance of from the origin and