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Jadi tinggi tabung adalah 25 cmKelas : IX Smp
Bab : 2 - Bangun Ruang Sisi Lengkung -
Dik : r = 20
π = 3,14
Luas Selimut Tabung = 3.140 cm2
Dit : Tinggi Tabung = .... ?
Jawab :
Luas Selimut Tabung = 2 πrt
3.140 = 2 x 3.14 x 20 x t
3.140 = 2 x 62,8 x t
3.140 = 125,6 t
t = 3.140
————
125,6
t = 25 Cm