V=a^2h
dv/da=2ah
dv/dh=a^2
u(x)=sqrt[(dv/da)^2*u(a)^2+(dv/dh)^2*u(h)^2]=sqrt[(2*2.134*5.2*0.002)^2+(2.134^2*0.03)^2]=0.14
所以
V=11.1±0.1
V=a^2h
dv/da=2ah
dv/dh=a^2
u(x)=sqrt[(dv/da)^2*u(a)^2+(dv/dh)^2*u(h)^2]=sqrt[(2*2.134*5.2*0.002)^2+(2.134^2*0.03)^2]=0.14
所以
V=11.1±0.1