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t=36
ditanya:r...?
jawab:V=1/3.phi.r2.t
16632=1/3.22/7.r2.36
16632=22/7.r2.12
16632=264/7.r2
r2 =16632÷264/7
r2 =16632×7/264
r2 =63×7
r2 =441
# r=^441
r=21
jadi, jari2 kerucut adalah 21 cm