Reference Info
Circumferences and Areas of Circles
| Diameter (inches) | Circumference (inches) | Area (Sq. in.) |
|---|---|---|
| 1 5/16 | 4.12334 | 1.35297 |
| 1 3/8 | 4.31969 | 1.48489 |
| 1 7/16 | 4.51604 | 1.62295 |
| 1 1/2 | 4.71239 | 1.76715 |
| 1 9/16 | 4.90874 | 1.91748 |
| 1 5/8 | 5.10509 | 2.07394 |
| 1 11/16 | 5.30144 | 2.23654 |
| 1 3/4 | 5.49779 | 2.40528 |
| 1 13/16 | 5.69414 | 2.58016 |
| 1 7/8 | 5.89049 | 2.76117 |
| 1 15/16 | 6.08684 | 2.94831 |
| 2 | 6.28319 | 3.14159 |
| 2 1/16 | 6.47953 | 3.34101 |
| 2 1/8 | 6.67588 | 3.54656 |
| 2 3/16 | 6.87223 | 3.75825 |
| 2 1/4 | 7.06858 | 3.97608 |
| 2 5/16 | 7.26493 | 4.20004 |
| 2 3/8 | 7.46128 | 4.43014 |
| 2 7/16 | 7.65763 | 4.66637 |
| 2 1/2 | 7.85398 | 4.90874 |
| 2 9/16 | 8.05033 | 5.15724 |
| 2 5/8 | 8.24668 | 5.41188 |
| 2 11/16 | 8.44303 | 5.67266 |
| 2 3/4 | 8.63938 | 5.93957 |
| 2 13/16 | 8.83573 | 6.21262 |
| 2 7/8 | 9.03208 | 6.49181 |
| 2 15/16 | 9.22843 | 6.77713 |
| 3 | 9.42478 | 7.06858 |
| 3 1/16 | 9.62113 | 7.36618 |
| 3 1/8 | 9.81748 | 7.66990 |
| 3 3/16 | 10.01383 | 7.97977 |
| 3 1/4 | 10.21018 | 8.29577 |
| 3 5/16 | 10.40653 | 8.61790 |
| 3 3/8 | 10.60288 | 8.94618 |
| 3 7/16 | 10.79922 | 9.28058 |
| 3 1/2 | 10.99557 | 9.62113 |
| 3 9/16 | 11.19192 | 9.96781 |
| 3 5/8 | 11.38827 | 10.32062 |
| 3 11/16 | 11.58462 | 10.67957 |
| 3 3/4 | 11.78097 | 11.04466 |
| 3 13/16 | 11.97732 | 11.41589 |
| 3 7/8 | 12.17367 | 11.79324 |
| 3 15/16 | 12.37002 | 12.17674 |
| 4 | 12.56637 | 12.56637 |
| 4 1/16 | 12.76272 | 12.96214 |
| 4 1/8 | 12.95907 | 13.36404 |
| 4 3/16 | 13.15542 | 13.77208 |
| 4 1/4 | 13.35177 | 14.18625 |
| 4 5/16 | 13.54812 | 14.60657 |
| 4 3/8 | 13.74447 | 15.03301 |
| 4 7/16 | 13.94082 | 15.46559 |
| 4 1/2 | 14.13717 | 15.90431 |
| 4 9/16 | 14.33352 | 16.34917 |
| 4 5/8 | 14.52987 | 16.80016 |
| 4 11/16 | 14.72622 | 17.25728 |
| 4 3/4 | 14.92257 | 17.72055 |
| 4 13/16 | 15.11891 | 18.18994 |
| 4 7/8 | 15.31526 | 18.66548 |
| 4 15/16 | 15.51161 | 19.14715 |
| 5 | 15.70796 | 19.63495 |
| 5 1/16 | 15.90431 | 20.12890 |
| 5 1/8 | 16.10066 | 20.62897 |
| 5 3/16 | 16.29701 | 21.13519 |
| 5 1/4 | 16.49336 | 21.64754 |
| 5 5/16 | 16.68971 | 22.16602 |
| 5 3/8 | 16.88606 | 22.69064 |
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