A cuboidal water tank contains 216 liters is water. Its depth is 1/3 of its length and breadth is % of 1/3 of the difference between length and depth. The length of the tank?

A cuboidal water tank contains 216 liters is water. Its depth is 1/3 of its length and breadth is % of 1/3 of the difference between length and depth. The length of the tank?

A. 2 dm

B. 6 dm

C. 18 dm

D. 72 dm

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