$8\mathrm{.}96$ Solve Problem $8\mathrm{.}90$ by using Mohr's circle.

$8\mathrm{.}90$ The moments of inertia of the area are $I_x=1\mathrm{.}26{10}^{6}i{n}^4,I_y=6\mathrm{.}55{10}^{5}i{n}^4,$ and $I_{xy}=-1\mathrm{.}02{10}^{5}i{n}^4.$ Determine the moments of inertia of the area $I_{x^{\text{'}}},I_{y^{\text{'}}},$ and $I_{x^{\text{'}}{y}^{\text{'}}}$ if $=30.$