Circle with Area 639.6678 Square Inches

Instant diameter calculation and visualization

Diameter

28.5386 inches

Radius

14.2693 inches

Circumference

89.6566 inches

Area

639.6678 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 = √(639.6678/π) = 14.2693 inches

                            d = 2 × 14.2693 = 28.5386 inches

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