The volume V(in cubic inches)of a cylindrical pipe with length 12 inches is given by V9r)=12 (3.14)r^2, where r is the radius of the piston(in inches). If the radius of the piston(in inches). If the radius is increasing with time t(in minutes) according to the formula r(t)= 1/6t^2, t> or equal to zero, find the volume V of the pipe as a function of the time t

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