Circle with Area 128.9638 Square Inches

Instant diameter calculation and visualization

Diameter

12.8141 inches

Radius

6.4071 inches

Circumference

40.2568 inches

Area

128.9638 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 = √(128.9638/π) = 6.4071 inches

                            d = 2 × 6.4071 = 12.8141 inches

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