" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
L = panjang x lebar
50 = (9 + l) × l
50 = 9l + l^2
terbentuk pers. kuadrat
l^2 + 9l - 50 = 0
(l + 129/10) (l - 39/10) = 0
l1 + 129/10 = 0
l1 = -12,9 (tdk memenuhi)
l2 - 39/10 = 0
l2 = 3,9 (memenuhi)
l = 3,9 cm
p = 9 + 3,9 = 12,9 cm
K = 2 (p + l) = 2 (12,9 + 3,9) = 2 x 16,8 = 33,6 cm
jadi Keliling PP = 33,6 cm