Tick the correct answer in the following and justify your choice : If the perimeter and the area of a circle are numerically equal, then the radius of the circle is

Let the radius of circle = r, Circumference of circle (perimeter) = 2πr, Area of circle = πr²
Given that the perimeter and area are equal in magnitude. Therefore
2πr = πr²
⇒ 2 = r
Therefore, the radius of circle is 2 units.
Hence, the option (A) is correct.

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