Water is filled in a container up to height 3m. A small hole of area 'a' is punched in the wall of the container at a height 52.5 cm from the bottom. The cross sectional area of the container is A. If a/A = 0.1 then ${\mathrm{v}}^2$ is: (where v is the velocity of water coming out of the hole) $[\mathrm{g}=10\mathrm{m}/{\sec }^2]$