21 sq ch = 84.98398487 a
22 sq ch = 89.03084129 a
23 sq ch = 93.07769772 a
24 sq ch = 97.12455414 a
25 sq ch = 101.17141056 a
26 sq ch = 105.21826698 a
27 sq ch = 109.2651234 a
28 sq ch = 113.31197983 a
29 sq ch = 117.35883625 a
30 sq ch = 121.40569267 a
31 sq ch = 125.45254909 a
32 sq ch = 129.49940552 a
33 sq ch = 133.54626194 a
34 sq ch = 137.59311836 a
35 sq ch = 141.63997478 a
36 sq ch = 145.68683121 a
37 sq ch = 149.73368763 a
38 sq ch = 153.78054405 a
39 sq ch = 157.82740047 a
40 sq ch = 161.8742569 a
41 sq ch = 165.92111332 a
42 sq ch = 169.96796974 a
43 sq ch = 174.01482616 a
44 sq ch = 178.06168259 a
45 sq ch = 182.10853901 a
46 sq ch = 186.15539543 a
47 sq ch = 190.20225185 a
48 sq ch = 194.24910828 a
49 sq ch = 198.2959647 a
50 sq ch = 202.34282112 a
51 sq ch = 206.38967754 a
52 sq ch = 210.43653396 a
53 sq ch = 214.48339039 a
54 sq ch = 218.53024681 a
55 sq ch = 222.57710323 a
56 sq ch = 226.62395965 a
57 sq ch = 230.67081608 a
58 sq ch = 234.7176725 a
59 sq ch = 238.76452892 a
60 sq ch = 242.81138534 a
61 sq ch = 246.85824177 a
62 sq ch = 250.90509819 a
63 sq ch = 254.95195461 a
64 sq ch = 258.99881103 a
65 sq ch = 263.04566746 a
66 sq ch = 267.09252388 a
67 sq ch = 271.1393803 a
68 sq ch = 275.18623672 a
69 sq ch = 279.23309315 a
70 sq ch = 283.27994957 a
71 sq ch = 287.32680599 a
72 sq ch = 291.37366241 a
73 sq ch = 295.42051884 a
74 sq ch = 299.46737526 a
75 sq ch = 303.51423168 a
76 sq ch = 307.5610881 a
77 sq ch = 311.60794452 a
78 sq ch = 315.65480095 a
79 sq ch = 319.70165737 a
80 sq ch = 323.74851379 a
81 sq ch = 327.79537021 a
82 sq ch = 331.84222664 a
83 sq ch = 335.88908306 a
84 sq ch = 339.93593948 a
85 sq ch = 343.9827959 a
86 sq ch = 348.02965233 a
87 sq ch = 352.07650875 a
88 sq ch = 356.12336517 a
89 sq ch = 360.17022159 a
90 sq ch = 364.21707802 a
91 sq ch = 368.26393444 a
92 sq ch = 372.31079086 a
93 sq ch = 376.35764728 a
94 sq ch = 380.40450371 a
95 sq ch = 384.45136013 a
96 sq ch = 388.49821655 a
97 sq ch = 392.54507297 a
98 sq ch = 396.5919294 a
99 sq ch = 400.63878582 a
100 sq ch = 404.68564224 a