jumlah tak terhingga deret geometri : 12+8+16/3+32/9

a = 12
r = 8/12 = 2/3

S tak hingga
= a/(1 - r)
= 12/(1 - 2/3)
= 12/(3/3 - 2/3)
= 12/ 1/3
= 12 : 1/3
= 12 × 3
= 36

smoga membantu, jawabannya ada digambar gan :v