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K alas = 62,8 cm
tinggi = 12 cm
ditanya Volume ?
maka :
K alas = 2 x π x r
62,8 = 6,28 x r
r = 62,8 / 6,28
r = 10 cm
jadi :
Volume = 1/3 x πr² x t
= 1/3 x 3,14 x 100 x 12
= 1.255,99 cm³
= 1.256 cm³