Answer to Question 5

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a.       Mass of the paint = 6.50 kg 0.22 kg = 6.28 kg

b.      Height of paint = 0.120 m - 7.00 10-3 m = 0.113 m

         Volume = pD2 h/4 = (p (0.15 m)2 0.113 m) 4 = 2.00 10-3 m3

c.       Density = 6.28 kg 2.00 10-3 m-3  = 3144 kg m-3  = 3100 kg m-3 (2 s.f.)