The moment of inertia of uniform semicircular disc of mass $M$ and radius $r$ about a line perpendicular to the plane of the disc through the centre is
The moment of inertia of uniform semicircular disc of mass $M$ and radius $r$ about a line perpendicular to the plane of the disc through the centre is
- A
$\frac{1}{4}\,M{r^2}$
- B
$\frac{2}{5}\,M{r^2}$
- C
$M{r^2}$
- D
$\frac{1}{2}\,M{r^2}$
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