Question

Tolong bantu jawab nomor 5 ya...

Answer 1

2 lintasan, saat naik dan turun

naik
12, 9, 27/4,.........
deret konvergen ; r = 3/4

S∞ = a/(1-r)
      = 12/(1-(3/4))
      = 12/(1/4)
      = 48 meter

saat turun
9, 27/4, 81/16, .........
deret konvergen ; r = 3/4

S∞ = a/(1-r)
      = 9/(1-(3/4))
      = 9/(1/4)
      = 36 meter

Total lintasan = 48+36
                       = 84 meter..........opsi D