# What is the area of a circle that has a diameter of 24?

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The area of a circle with diameter (d) is given by the formula (A = \pi \times \left(\frac{d}{2}\right)^2). Given that the diameter of the circle is 24, the radius ((r)) is half of the diameter, so (r = \frac{24}{2} = 12). Substituting (r = 12) into the formula, we have (A = \pi \times 12^2 = \pi \times 144). Thus, the area of the circle is (144\pi), or approximately (452.39) square units.

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