The number of lattice points inside the circle $x^2+y^2=a^2$ can not be
Options $(a)\; 202\;\;\; (b)\; 203\;\;\; (c)\; 204\;\;\; (d)\; 205$
Try: i have an idea of number of integer points on the circle $x^2+y^2=a^2$
Let $x,y\in\{4n,4n+1,4n+2,4n+3\}$
But no idea how to find number of integer points inside the circle.
Could some help me to solve it , Thanks