Answer:
x² + y² = 10
Explanation:
the equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
here (h, k ) = (0, 0 ) and r =
, then
(x - 0)² + (y - 0)² = (
)² , that is
x² + y² = 10