Ngụkọta oge nke arches maka picket fences
Ezipụta achọrọ akụkụ millimeters
H - opekempe elu nke nsu
Y - kacha elu nke a nsu
X - anya n'etiti emmepe nke oké rails
Z - obosara nke okporo ígwè picket
K - Number nke rails na ngalaba
D - The anya n'etiti rails
Ọ bụrụ na ndị dị elu
Y > H
Ọ bụrụ na ndị dị elu
Y < H