science question ... about lotus leaves

我想知你既why是指點解會浮還是點解要浮，nevermind，我答前者‧

點解會浮 : Large Surface Area - Lotus leaves have about a diameter of 40to60cm . Therefore , average gravitational force acting on the leaf is reduced , since Pressure = Force / Area . The larger area the leaf , the smaller the pressure acting on the leaf of Louts .

Low Density - The leaf is thin enough so that the volume is relatively small . Hence , the low density of Lotus leaves are able to float on water as Density = Mass / Volume

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