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a. massa jenis = m/V = 75/1,25 = 60kg/L
b. berat jenis = g.m/V = 10.60 = 60 N/L
1. v = 1/3 LA. t
= 1/3 Π r^2 . t
= 1/3 . 3,14. 625. 10^-4. 1,5
= 0,098125 m^3
a. massa Jeni's = m/v
= 75/0.098125
= 764.33 kg/m^3
b. W = m.g = 75.10 = 750 N
No. 2 sama juga... cuman untuk nomor 1 volume kerucut coba di Cek dulu apakah memang ITU rumusnya kalau salah di gnti aja rumusnya udah ad