CIRCLE - AREA

ACTIVITY TO FIND AND UNDERSTAND AREA OF CIRCLE 

   Divide into sixteen parts and arrange these parts as shown. You get a near rectangle with length equal to half the circumference (πr) and breadth equal to radius (r).
Therefore 
Area of circle = Area of rectangular figure = length x Breadth = πr2

NOTE : If we increase the numbers of divisions of circle in such a way that measure of arc on each part becomes a straight line then we can get a perfect rectangle. Division into sixteen parts make it easier to explain.

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