A truck moves along a circular path and describes 100 m when it has traced out 36° at the centre. The radius of the circle is equal to

AB = 100 Metre

$ecause 360^{circ}=2 pi mathrm{r}$

$herefore 36^{circ}=frac{2 pi r}{360} imes 36=frac{pi r}{5}$

$herefore frac{pi r}{5}=100 Rightarrow r=frac{500}{pi}$ metre