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Questions  >>  CBSE XII  >>  Math  >>  Model Papers
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Q)

The volume of a cube is increasing at a rate of $9\;cm^2/s$ . How fast is the surface area increasing . When the length of the edge is $10\;cm$

$\begin{array}{1 1} 3.6\;cm^2/s \\ 13.6\;cm^2/s \\ 5.2 cm^2/s \\ 0.6\;cm^2/s \end{array} $

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