CIRCULAR MEASURES

CIRCLE

O r

AREA OF A CIRCLE

If the polygon has n sides, then its area is :n*(1/2)sh= (1/2)nsh

‘ns ’ i s the sum of a l l s ides of the polygon

In other words ns is perimeterPerimeter denoted by p

Area of the polygon = (1/2)ph

Area of the circle = (1/2)*perimeter of the circle * radius = (1/2)*2∏*radius*radius = ∏*square of radius

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