A = 314.16 in2
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the chord is 4in long
The area of a circle with a diameter of 9.4 m is: 69.4 m2
The circumference of a circle (the distance around the perimeter) is calculated by mulitplying a constant value called Pi (which equals 3.14 and is true for all circles), times the circle's diameter (distance across the center).Therefore, to answer your question, C = Pi x D, or 3.14 x 20in, or 62.8 inches.
If the area of a circle is 8pi, its diameter is: 5.657 units.
Assuming a diameter of 5 inches.The area of this circle is: 19.63