The area is four times as large if the diameter doubles.
The area of a circle is A = (pi)r2 or (pi)(diameter/2)2
Since d is squared, it increases the area by the square of 2 if the diameter is doubled.
Try calculating the area for a diameter of 2m, 4m and 8m to prove this.
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The diameter of a circle with an area of 37.68 is 6.92
To find area of a circle using diameter, you use this formuler. Area=pi(diameter/2)(diameter/2)
Use the formula for the area of a circle (A = pi x radius2). Replace the data you know (the area), and solve for radius. Then, you can double this radius to get the diameter.
A circle with a diameter has an area of 50.265486543928724876568901 sq. ft.
The area of circle that has diameter of 14 centimeters is: 153.9 cm2