Solution
Let the number be $$x$$
According to ques,
=> $$2\times(x)^2=(18)^3$$
=> $$(x)^2=(18)^2\times\frac{18}{2}$$
=> $$x=\sqrt{(18)^2\times9}$$
=> $$x=18\times3=54$$
=> Ans - (A)
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