Find the area of a circle whose radius is 20cm.

By the condition of the problem, we are given a circle with a radius of 20 cm (r = 20 cm).

In order to find the area of a circle, we use the formula: S = п * r², where п = 3.14.

Substitute the values in the formula: S = 3.14 * 20 cm² = 3.14 * 400 cm = 1256 cm².

Answer: The area of the circle is 1256 cm².

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