快速计算圆的周长与面积表
圆的面积计算后的答案都是3·14的倍数,因此很难计算,下面我为大家提供1至100知道直径求周长和1至10知道半径求面积。
工具/原料
一支笔和一道题
直径求周长
1、1至25 求周长 3.146.289.4212.5615.7 18.8421.9825.1228.2631.434.5437.6840.8243.9647.150.2453.3856.5259.6662.865.9469.0872.2275.3678.5
2、26至50求周长81.6484.7887.9291.0694.297.34100.5103.62106.76109.9113.04 116.18 119.32 122.46 125.6128.74131.88135.02138.16141.3144.44147.58150.72153.86157
3、51至75求周长160.14163.28166.42169.56172.7175.84 178.98182.12185.26188.4 191.54194.68197.82200.96204.1207.24210.38213.52216.66219.8222.94226.08229.22232.36 235.5
4、76至100求周长238.64241.78244.92 248.06251.2254.34257.48260.62263.76266.9270.04 273.18276.32279.46282.6285.74288.88292.02295.16298.3301.44 304.58307.72310.86 314
半径求面积
1、3.14X 1的2次方=3.143.14X 2的2次方=12.563.14X 3的2次方=28.263.14X 4的2次方=50.243.14X 5的2次方=78.53.14X 6的2次方=113.043.14X 7的2次方=153.863.14X 8的2次方=200.963.14X 9的2次方=254.343.14X 10的2次方=314