The area of a circle is $3850\, cm ^{2} .$ In that circle, the length of an arc subtending a right angle at the centre is $\ldots \ldots \ldots . cm$.
The area of a circle is $3850\, cm ^{2} .$ In that circle, the length of an arc subtending a right angle at the centre is $\ldots \ldots \ldots . cm$.
- A
$55$
- B
$33$
- C
$110$
- D
$27.5$
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