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The area of a circle with a diameter of two cm is about 3.1416 cm.
The area of a circle if the diameter was s 7ft is 38.48ft
the diameter is the length across the circle, the area is pie r squared r is radius, which is half of the diameter
The area of a circle with a diameter of 10 centimeters is: 78.54 cm2
The diameter of a circle with an area of 86.54625 cm2 is: 10.49734 cm