根号1*根号2=1.4142135623731
根号2*根号3=2.44948974278318
根号3*根号4=3.46410161513775
根号4*根号5=4.47213595499958
根号5*根号6=5.47722557505166
根号6*根号7=6.48074069840786
根号7*根号8=7.48331477354788
根号8*根号9=8.48528137423857
根号9*根号10=9.48683298050514
根号10*根号11=10.4880884817015
根号11*根号12=11.4891252930761
根号12*根号13=12.4899959967968
根号13*根号14=13.490737563232
根号14*根号15=14.4913767461894
根号15*根号16=15.4919333848297
根号16*根号17=16.4924225024706
根号17*根号18=17.4928556845359
根号18*根号19=18.4932420089069
根号19*根号20=19.4935886896179
根号20*根号21=20.4939015319192。