The best estimate of the circumference of the circle with radius 2 units is 12 units (approximately).
The circumference of a circle is the perimeter of the circle. It is the total length of the boundary of the circle. The circumference of a circle is the product of the constant π and the diameter of the circle.
Under these circumstances, the circumference of a circle may be defined as the limit of the perimeters of inscribed regular polygons as the number of sides increases without bound. The term circumference is used when measuring physical objects, as well as when considering abstract geometric forms.
Given, radius = 2 units.
Circumference of a circle = 2πr = 2 * 3.14 * 2 = 12.56 units
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