Have you ever eaten Lamian Noodles? In fact, the process of making Lamian Noodles is permeated with mathematical knowledge. A certain volume of dough is made into Lamian Noodles, and the total length y(m) of noodles is (1)∵ According to the image, the total length of noodles is inversely proportional to the cross-sectional product of noodles.

The thicker the noodles, the shorter the total length of the noodles.

So the answer is: short;

(2) acquiring an inverse proportional function image from the image and passing through points (4, 32),

Let the functional relationship between y and s make y=kS, then k4=32,

The solution is k= 128,

The functional relationship between y and s is y= 128S.

(3) when S = 1.6mm2, y =1281.6 = 80m;