$1030kg$ per cubic meter $is$ the water densit, After descending for over two and a half hours, the Deepsea Challenger submarine reached the deepest point of the ocean floor in the Mariana Trench, $11$ km below the surface. Since they needed to send a pilot in the craft, it was essential for the engineering team to know the maximum amount of force every part of the vehicle would feel when at this depth.

Calculate the magnitude of the net force exerted on the circular viewing port with a radius of $6$ cm when Challenger was at the bottom of the Mariana Trench.