" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
= ( 1/2 (5+2) × 40 ) + ( 1/2 (40+20) × 1 ) + ( 1/2 (4+3) × 20
= ( 140 + 30 + 70 )
= 240 m