In this activity, we use the perimeter of the regular n-sided polygon to estimate the circumference of its circumcircle.[br]When the number of sides of the polygon increases, the perimeter gets closer and closer to the circumference of the circle.[br][br]Drag the slider to change number of sides of the polygon.[br]Pay attention to the estimated value of pi (perimeter/diameter).

From this activity, what is the best estimation of the value of pi?