Page 130 - 2010-2022 hose manufactureing ability and guide

TABLE 11-20 (Continued)
AREAS AND CIRCUMFERENCES OF CIRCLES FOR DIAMETERS
IN UNITS AND FRACTIONS

Dia. Area Circum. Dia. Area Circum. Dia. Area Circum. Dia. Area Circum. Dia. Area Circum Dia. Area Circum.
In. Sq. In. In. In. Sq. In. In. In. Sq. In. In. In. Sq. In. In. In. Sq. In. In. In. Sq. In. In.

1/4 1.2272 3.92699 1/4 14.186 13.3518 1/4 41.282 22.7765 1/2 122.72 39.2699 1/2 268.80 58.1195 1/2 471.44 76.9690
5/16 1.3530 4.12334 5/16 14.607 13.5481 5/16 41.997 22.9730 5/8 125.19 39.6626 5/8 272.45 58.5122 5/8 476.26 77.3617
3/8 1.4849 4.31969 3/8 15.033 13.7445 3/8 42.718 23.1692 3/4 127.68 40.0553 3/4 276.12 58.9049 3/4 481.11 77.7544
7/16 1.6230 4.51604 7/16 15.466 13.9408 7/16 43.446 23.3657 7/8 130.19 40.4480 7/8 279.81 59.2976 7/8 485.98 78.1471

1/2 1.7671 4.71239 1/2 15.904 14.1372 1/2 44.179 23.5619 13 132.73 40.8407 19 283.53 59.6903 25 490.87 78.5398
9/16 1.9175 4.90874 9/16 16.349 14.3335 9/16 44.918 23.7584 1/8 135.30 41.2334 1/8 287.27 60.0830 1/8 495.79 78.9325
5/8 2.0739 5.10509 5/8 16.800 14.5299 5/8 45.664 23.9546 1/4 137.89 41.6261 1/4 291.04 60.4757 1/4 500.74 79.3252
11/16 2.2365 5.30144 11/16 17.257 14.7262 11/16 46.415 24.1511 3/8 140.50 42.0188 3/8 294.83 60.8684 3/8 505.71 79.7179

3/4 2.4053 5.49779 3/4 17.721 14.9226 3/4 4.173 24.3473 1/2 143.14 42.4115 1/2 298.65 61.2611 1/2 510.71 80.1106
13/16 2.5802 5.69414 13/16 18.190 15.1189 13/16 47.937 24.5437 5/8 145.80 42.8042 5/8 302.49 61.6538 5/8 515.72 80.5033
7/8 2.7612 5.89049 7/8 18.665 15.3153 7/8 48.707 24.7400 3/4 148.49 43.1969 3/4 306.35 62.0465 3/4 520.77 80.8960
15/16 2.9483 6.08684 15/16 19.147 15.5116 15/16 49.483 24.9364 7/8 151.20 43.5836 7/8 310.24 62.4392 7/8 525.84 81.2887

One Square Inch = 645.16 Square Millimeters
Area = 0.7854 x (diameter) 2
Circumference = 3.14159 x diameter

RMA/IP-2/2003 109