Will has the following utility function: $u(w)=w^{{?}^{{?}^{?}}}\mathrm{.}5$ or the square root function

Which of the following prospects would he prefer?

$P1(0\mathrm{.}60,3,000,400)$

$P2(0\mathrm{.}70,1,200,600)$

$P3(0\mathrm{.}80,2,000,1,000)$