Circle with Area 128.1072 Square Inches

Instant diameter calculation and visualization

Diameter

12.7715 inches

Radius

6.3857 inches

Circumference

40.1228 inches

Area

128.1072 in²

How to Calculate Circle Diameter from Area

Step-by-Step Solution

Start with the circle area formula: A = πr²
Solve for radius: r = √(A/π)
Calculate diameter: d = 2r


                            r = √(128.1072/π) = 6.3857 inches

                            d = 2 × 6.3857 = 12.7715 inches

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