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314 = 3,14 x R2
R2 = 314 : 3,14
R2 = 100
R = akar pangkat 2 dari 100
R = 10
V Tabung = phi x r2 x t
4710 = 3,14x10x10xt
4710 = 314 x t
t = 4710 : 314
T = 15 CM :)
sekian mokaseh :D
4710 = 314 x t
4710 = 314 x t
15 cm = t
B) Luas alas =
314 = 3,14 x r^2
100 = r^2
10 cm = r