17^2=81+100-180cosacosa=-0,6sina=0,8S=1/2*9*10*0,8=45*0,8=3672+38h=33438h=262V=36h=262*36/38=262*18/19.
17^2=81+100-180cosa
cosa=-0,6
sina=0,8
S=1/2*9*10*0,8=45*0,8=36
72+38h=334
38h=262
V=36h=262*36/38=262*18/19.