If f(x)=x2f(x) = x^2f(x)=x2 and g(x)=xg(x) = \sqrt{x}g(x)=x, determine the domain of (f∘g)(x)(f \circ g)(x)(f∘g)(x).
x∈Rx \in \mathbb{R}x∈R
x≥0x \geq 0x≥0
x>0x > 0x>0
x≠0x \neq 0x=0