# How do you find the area of circle x^2 + y^2 = 5,625?

Cartesian equation of a circle: ${x}^{2} + {y}^{2} = {r}^{2}$
Therefore ${r}^{2} = 5625$ units.
Area of a circle : $A = \setminus \pi . {r}^{2} = 5625 \setminus \pi$ units