Mathematics - Circle Question with Solution | TestHub

Let a circle$C:{\left(x-h\right)}^2+{\left(y-k\right)}^2=r^2,k>0$, touch the$x$-axis at$\left(1,0\right)$. 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 _____.