我直接说结果,3.14 12.56 28.26 50.24 78,5 100.48
113.04 153.86 200.96 254.34 314 379.94 452.16
530.66 615.44 706.5 803.84 907,96 1017.36 1133.54
1256 1384.74 1519.76 1661.06 1808,64 1962.5 2122.64 2289.06 2461.76 2640.74 2826