Answer:
Moment
of inertia will decrease, because \[{{\text{I}}_{\text{d}}}=\frac{1}{2}\text{m}{{\text{r}}^{\text{2}}}\]and
\[{{\text{I}}_{\text{s}}}=\frac{2}{5}\text{m}{{\text{r}}^{\text{2}}}\], the radius of sphere
formed on recasting the disc will also decrease.
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