How do you calculate the pressure exerted by the water on the bottom of a 2.75m deep swimming pool.(Gravitational field strength=9.8N/kg?

How do you calculate the pressure exerted by the water on the bottom of a 2.75m deep swimming pool.(Gravitational field strength=9.8N/kg?
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Answer :

1,000×2.75×9.8=26,950
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