36
The length of a pendulum is $70$ cm and it describes an arc of length $88$ cm when swings. The angle subtended by the arc at the centre is
- (a)$36^{\circ}$
- (b)$70^{\circ}$
- (c)$72^{\circ}$
- (d)$80^{\circ}$
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Answer (C) $72^{\circ}$