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Cin

Conversions to other units

Conversions from other units

Physical quantity

area

Unit systems

UK imperial | UK circular

Basic unit dimensions

[length]^2

Corresponding quantities for 1 circular inch

Radius r of a circle from A = πr^2:
| 0.5 inches
| 13 mm (millimeters)

Radius r of a sphere from A = 4πr^2:
| 0.25 inches
| 6.4 mm (millimeters)

Edge length a of a square from A = a^2:
| 0.8862 inches
| 22.51 mm (millimeters)

Comparisons for 1 circular inch as area

≈ ( 0.045 ≈ 1/22 ) × area of one side of a compact disc ( 0.01131 m^2 )

≈ 0.46 × area of a human retina ( ≈ 0.0011 m^2 )

≈ area of a typical postage stamp ( ≈ 5 cm^2 )

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