Question

Nomor 11 gimana ya beserta caranya

Answer 1

Potongan bambu terpendek = a = 3
potongan bambu ke 2 = ar
potongan bambu ke 3 = ar²
potongan bambu ke 4 = ar³
potongan bambu ke 5 = ar⁴
potongan bambu terpanjang = ar^5 = 96
3r^5 = 96
r^5 = 32
r = 2

panjang bambu mula mula =
Sn = a(r^n - 1) / r - 1
S6 = 3(2^6 - 1) / 2 - 1
= 3(64 - 1) / 1
= 3 x 63 /1
= 189 cm