Question
The equation of the circle with centre (0,2) and radius 2 is x^2+y^2-m y=0. The value of m is
The equation of the circle with centre (0,2) and radius 2 is x^2+y^2-m y=0. The value of m is
C. 4
Here h=0, k=2 and r=2. Therefore, the required equation of the circle is : (x-0)^2+(y-2)^2=(2)^2 or x^2+y^2-4 y+4=4 or x^2+y^2-4 y=0
Related: Mathematics — Circle · All PYQ Banks