R.D of Petrol is 0.80. Find density of Petrol in kg/m3
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সাইকেল সুপারি গাছে কাঁঠাল সরিষা এর উত্তর দাও
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Relative density, or specific gravity,[1][2] is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with respect to water at its densest (at 4 °C or 39.2 °F); for gases, the reference is air at room temperature (20 °C or 68 °F). The term "relative density" is often preferred in scientific usage.
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