[填空题]
Two aluminum wires have the same 1 4g( toicxgldio) s3v cu5j:,resistance. If one has twice the length of tt.fvv -v;clkda(,z1c he other, what is the ratio of the diameter of the longer wirdfc.kvv1 ,t-a(zc; v le to the diameter of the shorter wire? $\approx$ (retain three decimal places)
