U2 = a × r27 = arU5 = a × 8 = ar × 8 = 27 × r = r = 27 = a × a = 40,5salah soal itu ya..
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U2 = a × r
27 = ar
U5 = a ×
8 = ar ×
8 = 27 ×
r =
r =
27 = a ×
a = 40,5
salah soal itu ya..