Răspuns:
a) 13/72, 1/6
b) 6.1, 6
c) (37rad3)/2
d) (3rad2)/2, 2
Explicație pas cu pas:
a) ma = (1/4+1/9)/2=(13/36)/2=13/72
mg=rad(1/4*1/9)=rad(1/36)=1/6
b) ma=(5+7.2)/2=12.2/2=6.1
mg=rad(5*7.2)=rad 36=6
c) ma=(25rad3+12rad3)/2=(37rad3)/2
mg=rad(25rad3*12rad3)=rad900=30
d) ma=(rad2+rad8)/2=(rad2+2rad2)/2=(3rad2)/2
mg=rad(rad2*rad8)=rad(rad16)=rad4=2