" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Sn = 30 cm
P = __?
P = 100/Sn - 100/PP
P = 100/30 - 100/120
P = (400-100)/120
P = 2,5 D ← jwb