$8.$ A concrete block that has a total volume of $14$ cubic feet and a specific gravity of $2\mathrm{.}45$ is tied to the lower end of a $12$ foot long $2$x$2$ ft square buoy. At equilibrium, the concrete block is suspended about $1$ foot above the bottom of the harbor, with $4$ feet showing above the water surface of the salt water, SG $1\mathrm{.}03.$ What is the density of the buoy?