If the edge of a cube increases at the rate of \( 60 \mathrm{~cm} \...

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If the edge of a cube increases at the rate of \( 60 \mathrm{~cm} \)
\( \mathrm{P} \) per second, at what rate the volume is increasing

W when the edge is \( 90 \mathrm{~cm} \)
(A) \( 486000 \mathrm{cu} \mathrm{cm} \mathrm{per} \mathrm{sec} \)
(B) \( 1458000 \mathrm{cu} \mathrm{cm} \) per sec
(C) \( 43740000 \mathrm{cu} \mathrm{cm} \) per sec
(D) None of these
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