Diameter (in)Circumference (in)Area (in2)
1/64 0.049 0.00019
1/32 0.098 0.00077
3/64 0.147 0.0017
1/16 0.196 0.0031
3/32 0.295 0.0069
1/8 0.393 0.012
5/32 0.491 0.019
3/16 0.589 0.028
7/32 0.687 0.038
1/4 0.785 0.049
9/32 0.884 0.062
5/16 0.982 0.077
11/32 1.08 0.093
3/8 1.18 0.11
13/32 1.28 0.13
7/16 1.37 0.15
15/32 1.47 0.17
1/2 1.57 0.20
17/32 1.67 0.22
9/16 1.77 0.25
19/32 1.87 0.28
5/8 1.96 0.31
21/32 2.06 0.34
11/16 2.16 0.37
23/32 2.26 0.41
3/4 2.36 0.44
25/32 2.45 0.48
13/16 2.55 0.52
27/32 2.65 0.56
7/8 2.75 0.60
29/32 2.85 0.65
15/16 2.95 0.69
31/32 3.04 0.74
1 1/16 3.34 0.89
1 1/8 3.53 0.99
1 3/16 3.73 1.11
1 1/4 3.93 1.23
1 5/16 4.12 1.35
1 3/8 4.32 1.48
1 7/16 4.52 1.62
1 1/2 4.71 1.77
1 9/16 4.91 1.92
1 5/8 5.11 2.07
1 11/16 5.30 2.24
1 3/4 5.50 2.41
1 13/16 5.69 2.58
1 7/8 5.89 2.76
1 15/16 6.09 2.95
2 1/16 6.48 3.34
2 1/8 6.68 3.55
2 3/16 6.87 3.76
2 1/4 7.07 3.98
2 5/16 7.26 4.20
2 3/8 7.46 4.43
2 7/16 7.66 4.67
2 1/2 7.85 4.91
2 9/16 8.05 5.16
2 5/8 8.25 5.41
2 11/16 8.44 5.67
2 3/4 8.64 5.94
2 13/16 8.84 6.21
2 7/8 9.03 6.49
2 15/16 9.23 6.78
3 1/16 9.62 7.37
3 1/8 9.82 7.67
3 3/16 10.01 7.98
3 1/4 10.21 8.30
3 5/16 10.41 8.62
3 3/8 10.60 8.95
3 7/16 10.80 9.28
3 1/2 11.00 9.62
3 9/16 11.19 9.97
3 5/8 11.39 10.32
3 11/16 11.58 10.68
3 3/4 11.78 11.04
3 13/16 11.98 11.42
3 7/8 12.17 11.79
3 15/16 12.37 12.18
4 1/8 12.96 13.36
4 3/16 13.16 13.77
4 1/4 13.35 14.19
4 5/16 13.55 14.61
4 3/8 13.74 15.03
4 7/16 13.94 15.47
4 1/2 14.14 15.90
4 9/16 14.33 16.35
4 5/8 14.53 16.80
4 11/16 14.73 17.26
4 3/4 14.92 17.72
4 13/16 15.12 18.19
4 7/8 15.32 18.67
4 15/16 15.51 19.15
5 1/8 16.10 20.63
5 3/16 16.30 21.14
5 1/4 16.49 21.65
5 5/16 16.69 22.17
5 3/8 16.89 22.69
5 7/16 17.08 23.22
5 1/2 17.28 23.76
5 9/16 17.48 24.30
5 5/8 17.67 24.85
5 11/16 17.87 25.41
5 3/4 18.06 25.97
5 13/16 18.26 26.53
5 7/8 18.46 27.11
5 15/16 18.65 27.69
6 1/8 19.24 29.46
6 1/4 19.63 30.68
6 3/8 20.03 31.92
6 1/2 20.42 33.18
6 5/8 20.81 34.47
6 3/4 21.21 35.78
6 7/8 21.60 37.12
7 1/8 22.38 39.87
7 1/4 22.78 41.28
7 3/8 23.17 42.72
7 1/2 23.56 44.18
7 5/8 23.95 45.66
7 3/4 24.35 47.17
7 7/8 24.74 48.71
8 1/8 25.53 51.85
8 1/4 25.92 53.46
8 3/8 26.31 55.09
8 1/2 26.70 56.75
8 5/8 27.10 58.43
8 3/4 27.49 60.13
8 7/8 27.88 61.86
9 1/8 28.67 65.40
9 1/4 29.06 67.20
9 3/8 29.45 69.03
9 1/2 29.85 70.88
9 5/8 30.24 72.76
9 3/4 30.63 74.66
9 7/8 31.02 76.59
10 1/8 31.81 80.52
10 1/4 32.20 82.52
10 3/8 32.59 84.54
10 1/2 32.99 86.59
10 5/8 33.38 88.66
10 3/4 33.77 90.76
10 7/8 34.16 92.89
1 in (inch) = 25.4 mm 1 in2 = 645.2 mm2 = 6.452 cm2 = 6.452x10-4 m2




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