" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= (2 x L) : d1
= (2 x 1400) : 40
= 2800 : 40
= 70 m
1400=40×d2÷2
1400=20×d2
1400÷20=d2
70=d2