Calculate the area of the circular pathway formed by two concentric circles having th following radii R=20cm,r=6cm
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it will be area of bigger circle - area of smaller circle
=πr1square - πr2square
=22÷7×20×20 - 22÷7×20×20
=1144cm square
=πr1square - πr2square
=22÷7×20×20 - 22÷7×20×20
=1144cm square
Veeresh123:
how
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