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Verified answer
V = r × r × r342.000 + 1000 = r^3
343.000 = r^3
r = 70 cm (B)
(1.000 + 342.000) cm^3 = r^3
343.000 cm^3 = r^3
70^3 = r^3
r = 70
Jadi panjang rusuk bak tersebut 70 cm