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。