211 questions asked across 20 exam years, newest first
Let a circle C:(x−h)2+(y−k)2=r2, k>0, touch the x-axis at (1,0). If the line x+y=0 intersects the circle C at P and Q such that the length of the chord PQ is 2, then the value of h+k+r is equal to ____.
Answer: 7
