To solve this problem, we first recognize that the options are all multiples of π, indicating it involves the area of a circle.

Key Insight:

The area of a circle is given by (A = \pi r^2), where (r) is the radius.

Assuming the problem involves a circle with radius 10 (a common scenario, e.g., a circle inscribed in a square of side 20, where diameter = side length = 20 → radius = 10):

[A = \pi (10)^2 = 100\pi]

Answer: C 100π.

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