[b]Circumference of the circle or perimeter of the circle is the measurement of the boundary across any two-dimensional circular shape including circle.[/b][br][b][color=#ff0000]The Circumference (or) perimeter of a circle = 2πR .[/color][/b][br][i][color=#0000ff]where,[br]R is the radius of the circle[br]π is the mathematical constant with an approximate (up to two decimal points) value of 3.14 .[/color][/i]

Student will be able to find the circumference of circle with a visual experience ,

[b]Use [color=#00ff00]Start[/color] and [color=#ff0000]Stop[/color] button then see carefully about the animation of figure.[/b]

[b][color=#0000ff]1)Open Geogebra graphics window,[br]2) Take a point O(0,0) from input bar,[br]3)Take another point A(0,1),from tool bar,[br]4)Then take a segment with given length (6.28) from the point A,[br]5)Take a slider(0.1,6.28,0.01),[br]6)Take another point c from input bar , C=(a,1),[br]7)Take a circle with Radius (1) on point C ,[br]8)Take a point D on given circle using by point on object Tool,[br]9)Then take another D' point by using input bar ,Rotate(D,-a,C),[br]10) Now using circular Arc from tool bar then click on C,D,D' respectively ,[br]11) Then OD by using a segment ,[br]12) Finally show or hide line ,object,level and design from different color for satiable visualization of applet.[/color][/b][br][br]