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t=3/5*10=15
v=phi*r^2*t
=3,14*10*10*15
=4710 cm^3
r = 2/5 = 0,4
t = 3/5 = 0,6
volume = 3,14 x 0,4 x 0,4 x 0,6 = 0,30144
maaf kalo salah