Question 3

Twice the square of a number is the cube of 18. The number is

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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