Equation of circle having radius r and centre (3,4) is =(x−3)2+(y−4)2=r2 if it is passing through (0, 0) ∴(0−3)2+(0−4)2=r2 ⇒r2=25 equation of circle is (x−3)2+(y−4)2=25 putting y=0 ∴x=6 unit = interception x-axis intercept on y axis (putting x=0) is y=8 units