" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
Verified answer
K = 120p = 3x +9
l = 4x-5
K = 2p + 2l
120 = 2(3x + 9) + 2(4x-5)
120 = 6x + 18 + 8x -10
120 = 14x +8
14x = 112
x = 8
p= 3x +9 = 3(8)+9 = 33
l = 4x - 5 = 4(8)-5= 27
selisih = 33-27 = 6cm