From a circle of radius $a,$ an isosceles right angled triangle with the hypotenuse as the diameter of the circle is removed. The distance of the centre of gravity of the remaining position from the centre of the circle is
From a circle of radius $a,$ an isosceles right angled triangle with the hypotenuse as the diameter of the circle is removed. The distance of the centre of gravity of the remaining position from the centre of the circle is
- A
$3(\pi - 1)a$
- B
$\frac{{(\pi - 1)a}}{6}$
- C
$\frac{a}{{3\,(\pi - 1)}}$
- D
$\frac{a}{{3\,(\pi + 1)}}$
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