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The circumference of a circle is given by the formula C = 2πr, where r is the radius of the circle.
In this case, the radius of the circular pillar is given as 49cm.
Using the formula, we can find the circumference of the pillar:
C = 2π(49) = 98π ≈ 307.86 cm.
Therefore, the circumference of the circular pillar is approximately 307.86 cm.