Circle with Area 399.3959 Square Inches

Instant diameter calculation and visualization

Diameter

22.5505 inches

Radius

11.2753 inches

Circumference

70.8446 inches

Area

399.3959 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 = √(399.3959/π) = 11.2753 inches
d = 2 × 11.2753 = 22.5505 inches

Similar Calculations