1.

If 4/a=a²/ 16 find value of a​

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ANSWER:

\frac{4}{a}  =  \frac{ {a}^{2} }{16}  \ \\   \frac{4}{a}  =  { (\frac{a}{4}) }^{2}  \\  \frac{4}{a}  =  \frac{a}{4}  \times  \frac{a}{4} \\ 4 \times 4 \times 4 = a \times a \times a \\  {a}^{3}  = 64 \\ a =  \sqrt[3]{64}  \\a = 4

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