find the area of the circle x^2+y^2=4
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as you know x^2+y^2=r^2so
Acc. To this r^2=4
And area of circle is pie *r*r and r=2
Area of circle is 4*pie= 4*3.14
=12.56
Acc. To this r^2=4
And area of circle is pie *r*r and r=2
Area of circle is 4*pie= 4*3.14
=12.56
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