Answers

2014-03-20T16:48:52+05:30
Area of the paper=l*b       [since its a rectangle]
                            =30*21
                            =630 square cm
Now the radius of the largest circle will be 10.5 cm
Hence the area of the circle so formed will be 346.36
And the area of the left portion will be =630-346.36
                                                             =283.64
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