Answers

2014-03-26T21:54:00+05:30
Area of circle with radius 9cm = πr² = (9*9)π = 81πsq.cm

Let keep the π as it is.

Area of circle with radius 5cm = πr² = (5*5)π = 25πsq.cm

Area of remaining sheet = 81π - 25π = 56π  = 56*(22/7) = 8*22 = 176sq.cm

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2014-03-28T19:53:42+05:30
area of circle 1.=9×9=81picmsquare   and area of 2nd=5×5=25picmsquare
remaining area=81-25=56picmsquare
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