Tangential velocity of a particle making x revolutions in time t on a circle of radius pi/2 m

1. A.
   $\frac{\pi x}{t}$
2. B.
   $\frac{\pi x}{2t}$
3. C.
   $\frac{\pi^2 x}{2t}$
4. D.
   $\frac{\pi^2 x}{t}$

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1. A.
   $\frac{x}{\pi t}$
2. B.
   $\frac{\pi^{2}}{xt}$
3. C.
   $\frac{\pi^{2}x}{t}$
4. D.
   $\frac{\pi x}{t}$

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1. A.
   $\dfrac{\pi x}{t}$
2. B.
   $\dfrac{\pi^2 x}{t}$
3. C.
   $\dfrac{\pi}{xt}$
4. D.
   $\dfrac{xt}{\pi}$

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