Determine how high above the waterline the bottom of one $81$ $g$ block of cargo would be supported with the following conditions: the cargo block is placed on its side (length of $8.2$ $cm$, width and height of $3.7$ $cm$), a block of foam ($\rho=$ $22$ $kg/m^3$) on which the cargo rests is $4$ $cm$ high, and, when viewed from above, there is $2.8$ $cm$ of foam around all edges of the cargo block. $h=$ $cm$