Please answer question 22

Q22. While determining the density of a solid sphere a student noted down the following readings :

            Mass of the sphere = 63g

          Reading of water level in the beaker without sphere in it = 82 ml

          Reading of water level with the beaker completely immersed in it = 89 ml

          On the basis of these observations, what should be the density of the solid sphere?
 

Mass = 63 grams = 0.0063 kg

Initial reading = 82 ml

Final reading = 89 ml

Volume of sphere = Amount of water displaced by it 

Amount of water displaced by it  = 
Final reading - Initial reading
 = 89 - 82
 = 7 ml
 
Volume = 7 ml = 7 cm³          [ 1 ml = 1 cm³]

Density = Mass  / Volume
 = 63/7
 =9 g/cm³
= 9000 kg/m³                            [1g/cm³ = 1000 kg/m³]

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When we will make a rhombus ABCD with a diagonal BD, we will get two triangles triangle ABD triangle BCD
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