An autonomous deep-sea research lander is deployed to the ocean floor. A flat, horizontal quartz observation window on the top surface of the lander is subjected to a hydrostatic pressure of 1.12 × 108 Pa due to the surrounding seawater.
The total downward force exerted by the seawater on the outer surface of this window is 1.68 × 105 N.
Calculate the area of the observation window.