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Verified answer
Diket:a = 4½ = 4,5
r = 9:4½ = 2
U10 = ar^n-1
U10 = 4,5.2^10-1
U10 = 4,5.2^9
U10 = 4,5.512
U10 = 2304 (A)
ket: titik(.) berarti dikali☺