Q. 10.     From a circular card sheet of radius , two circles of radius and a rectangle of length and breadth are removed.(as shown in the adjoining figure). Find the area of the remaining sheet. (Take )

It is given that radius of circular card sheet is

Now, we know that

Area of circle (A) =

- (i)

Now,

Area of circle with radius 3.5 cm is

Area of two such circle is =                   -(ii)

Now, Area of rectangle =

-(iii)

Now, the remaining area is (i) - [(ii) + (iii)]

Therefore,  area of the remaining sheet  is

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