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 jawabannya A 1540
1/2x22/7x7x7x20
1540

di ketahui : r = 14 cm : 2 = 7 cm
t = 20 cm
volume 1/2 tabung = 1/2 × phi × r² × t
= 1/2 ×
22/7 × 7 cm × 7 cm × 20 cm
= 1540 cm³