Reference Info
Circumferences and Areas of Circles
| Diameter (inches) | Circumference (inches) | Area (Sq. in.) |
|---|---|---|
| 79 5/8 | 250.14932 | 4979.53488 |
| 79 3/4 | 250.54202 | 4995.18148 |
| 79 7/8 | 250.93472 | 5010.85263 |
| 80 | 251.32742 | 5026.54832 |
| 80 1/8 | 251.72012 | 5042.26856 |
| 80 1/4 | 252.11281 | 5058.01333 |
| 80 3/8 | 252.50551 | 5073.78266 |
| 80 1/2 | 252.89821 | 5089.57652 |
| 80 5/8 | 253.29091 | 5105.39493 |
| 80 3/4 | 253.68361 | 5121.23789 |
| 80 7/8 | 254.07631 | 5137.10538 |
| 81 | 254.46901 | 5152.99743 |
| 81 1/8 | 254.86171 | 5168.91401 |
| 81 1/4 | 255.25441 | 5184.85514 |
| 81 3/8 | 255.64711 | 5200.82081 |
| 81 1/2 | 256.03981 | 5216.81103 |
| 81 5/8 | 256.43250 | 5232.82579 |
| 81 3/4 | 256.82520 | 5248.86509 |
| 81 7/8 | 257.21790 | 5264.92894 |
| 82 | 257.61060 | 5281.01733 |
| 82 1/8 | 258.00330 | 5297.13026 |
| 82 3/8 | 258.78870 | 5329.42976 |
| 82 1/2 | 259.18140 | 5345.61633 |
| 82 5/8 | 259.57410 | 5361.82744 |
| 82 3/4 | 259.96680 | 5378.06309 |
| 82 7/8 | 260.35950 | 5394.32329 |
| 83 | 260.75219 | 5410.60803 |
| 83 1/8 | 261.14489 | 5426.91731 |
| 83 1/4 | 261.53759 | 5443.25114 |
| 83 3/8 | 261.93029 | 5459.60951 |
| 83 1/2 | 262.32299 | 5475.99243 |
| 83 5/8 | 262.71569 | 5492.39988 |
| 83 3/4 | 263.10839 | 5508.83189 |
| 83 7/8 | 263.50109 | 5525.28843 |
| 84 | 263.89379 | 5541.76952 |
| 84 1/8 | 264.28649 | 5558.27516 |
| 84 1/4 | 264.67918 | 5574.80533 |
| 84 3/8 | 265.07188 | 5591.36005 |
| 84 1/2 | 265.46458 | 5607.93932 |
| 84 5/8 | 265.85728 | 5624.54313 |
| 84 3/4 | 266.24998 | 5641.17148 |
| 84 7/8 | 266.64268 | 5657.82438 |
| 85 | 267.03538 | 5674.50181 |
| 85 1/8 | 267.42808 | 5691.20380 |
| 85 1/4 | 267.82078 | 5707.93032 |
| 85 3/8 | 268.21348 | 5724.68139 |
| 85 1/2 | 268.60618 | 5741.45701 |
| 85 5/8 | 268.99887 | 5758.25717 |
| 85 3/4 | 269.39157 | 5775.08187 |
| 85 7/8 | 269.78427 | 5791.93111 |
| 86 | 270.17697 | 5808.80490 |
| 86 1/8 | 270.56967 | 5825.70323 |
| 86 1/4 | 270.96237 | 5842.62611 |
| 86 3/8 | 271.35507 | 5859.57353 |
| 86 1/2 | 271.74777 | 5876.54549 |
| 86 5/8 | 272.14047 | 5893.54200 |
| 86 3/4 | 272.53317 | 5910.56305 |
| 86 7/8 | 272.92587 | 5927.60865 |
| 87 | 273.31856 | 5944.67879 |
| 87 1/8 | 273.71126 | 5961.77347 |
| 87 1/4 | 274.10396 | 5978.89269 |
| 87 3/8 | 274.49666 | 5996.03646 |
| 87 1/2 | 274.88936 | 6013.20478 |
| 87 5/8 | 275.28206 | 6030.39763 |
| 87 3/4 | 275.67476 | 6047.61503 |
| 87 7/8 | 276.06746 | 6064.85698 |
| 88 | 276.46016 | 6082.12347 |
| 88 1/8 | 276.85286 | 6099.41450 |
| 88 1/4 | 277.24556 | 6116.73007 |
| 88 3/8 | 277.63825 | 6134.07019 |
| 88 1/2 | 278.03095 | 6151.43486 |
| 88 5/8 | 278.42365 | 6168.82406 |
| 88 3/4 | 278.81635 | 6186.23781 |
| 88 7/8 | 279.20905 | 6203.67611 |
| 89 | 279.60175 | 6221.13894 |
| 89 1/8 | 279.99445 | 6238.62633 |
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