diketahui barisan geometri u5 = 160 u7 = 640 ditanya u11?

U5 = 160
ar^4 = 160

U7 = 640
ar^6 = 640

U7/U5 = 640/160
ar^6/ar^4 = 4
r^2 = 4
r = 2

U5 = 160
ar^4 = 160
a. (2)^4 = 160
a.16 = 160
a = 10

U11 = ar^10 = 10.2^10 = 10.1024 = 10240

Semoga bisa bantu ya

semoga membantu
thx



jjjj