Circle with Area 128.8814 Square Inches

Instant diameter calculation and visualization

Diameter

12.81 inches

Radius

6.405 inches

Circumference

40.2439 inches

Area

128.8814 in²

How to Calculate Circle Diameter from Area

Step-by-Step Solution

  1. Start with the circle area formula: A = πr²
  2. Solve for radius: r = √(A/π)
  3. Calculate diameter: d = 2r
r = √(128.8814/π) = 6.405 inches
d = 2 × 6.405 = 12.81 inches

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