Question

solve this question and explained fully

Answer 1

hello............................
perimeter and area of circle are equal 
So,
perimeter of circle=area of circle
2πr=πr²
2π/π=r²/r
2=r
the radius of circle is 2 units
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hope this would help you
@Rohit

Answer 2

area = perimeter
πr²=2πr
π×r×r= 2×π×r
r=2                                cancel π and r from both sides

radius is  2 units