The length l$,$ width w$,$ and height h of a box change with time. At a certain instant the dimensions are l$=5$m and w$=$h$=6$m$,$ and l and w are increasing at a rate of $3($m$)/($s$)$

while h is decreasing at a rate of $8($m$)/($s$)($m$^(3))/($s$)($m$^(3))/($s$)($m$^(2))/($s$)($m$^(2))/($s$)($m$)/($s$)($m$)/($s$)$