The casting below is a square plate. Each side is $10$ in and the thickness, $T,$ is $0\mathrm{.}75$ in $.$ If the maximum feeding distance for this riser is $4\mathrm{.}5$ times the thickness of the steel casting with the edge effect being $2\mathrm{.}5$ T and the riser effect equal to $2$ T $,$ will there be porosity in the solidified plate?

Prove your answer. If so$,$ draw where in the plate casting would you expect the porosity to be located. Be specific. Given the fact that this steel is a long freezing range alloy, do you think that the porosity will be in the form of large centerline voids or dispersed microshrinkage? Explain. $(8$pts$)$