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Verified answer
Kelas 8 MatematikaBab Barisan dan Deret Bilangan
a = 10.000
b = 2.000
Sn = n/2 . (2a + (n - 1) . b)
S20 = 20/2 . (2 . 10.000 + 19 . 2.000)
S20 = 10 . (20.000 + 38.000)
S20 = 10 . 58.000
S20 = Rp 580.000,00