Let `A_n` be the area that is outside a n-sided regular polygon and inside its circumscribeing circle. Also `B_n` is the area inside the polygon and outside the circle inscribed in the polygon. Let `R` be the radius of the circle circumscribing n-sided polygon. On the basis of above information, answer the equation If `n=6\ ` then `A_n` is equal to `R^2((pi-sqrt(3))/2)` (b) `R^2((2pi-6sqrt(3))/2)` `R^2(pi-sqrt(3))` (d) `R^2((2pi-3sqrt(3))/2)`