A circle has a diameter of 4 inches. Which statement about the area and circumference of the circle is true?

The radius is half the 4-inch diameter, so it is 2 inches. The area is π(2)² = 4π square inches, and the circumference is π(4) = 4π inches. Their numerical values are equal, even though the measurements use different units, so the true statement is that the numerical values of the circumference and area are equal.

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