Answer :
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
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
area of circle 1.=9×9=81picmsquare and area of 2nd=5×5=25picmsquare
remaining area=81-25=56picmsquare
remaining area=81-25=56picmsquare