Now, suppose we cut 20 horizontal slices (wideness = 1) , we get (2*)10 rings from 0 to +/- 10

How do we calculate the area/wolume/weight/mass of each ring?

At a rough extimate rings have a radius of 2*(10,9.8,9.5,9.2,8.8,8.3,7.6,6.9,5.9,3.9)

even considering that the last two (9,10) have A=50/60 the total is less than

**1 100**.

in order to get 1256.6 we should have 20 rings of 62.8, or some rings bigger than that.

But the biggest is ring 1 which is a little less than 62.8

can we determine the area/mass of each ring?

does the area of each ring correspond to wolume/weight/mass?

Thanks