Solve the given problems.

A tsunami is a very high ocean tidal wave (or series of waves) often caused by an earthquake. An Alaskan tsunami in 1958 measured over 500 m high; an Asian tsunami in 2004 killed over 230,000 people; a tsunami in Japan in 2011 killed over 10,000 people. An equation that approximates the speed v (in m/s) of a tsunami is v = √gd, where g = 9.8m/s² and d is the average depth (in m) of the ocean floor. Find v (in km/h) for d = 3500m (valid for many parts of the Indian Ocean and Pacific Ocean).