hat
8. Elaji longè a: L, longè a nan vid la itilize fè sezon prentan an, L≈n1√ (πD2) & sup2; + T & sup2 ;.
eng
8. Expand the length: L, the length of the blank used to make the spring, L≈n1√(πD2)&sup2;+t&sup2;.