Circle with Area 639.1456 Square Inches

Instant diameter calculation and visualization

Diameter

28.5269 inches

Radius

14.2635 inches

Circumference

89.62 inches

Area

639.1456 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 = √(639.1456/π) = 14.2635 inches

                            d = 2 × 14.2635 = 28.5269 inches

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