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RossThe area of a circle is calculated using the formula A = πr^2, where r is the radius of the circle. In this case, the radius is half of the diameter, which is 0.8 cm. Therefore, the radius is 0.4 cm. Plugging this value into the formula, we get A = π(0.4)^2 ≈ 0.50265 square centimeters.
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