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The diameter of a metallic ball is 4.2 cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm3? |
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Answer» Volume of metallic ball =4/3 pi.r^3=4/3 x 22/7 x (4.2/2)^3=4/3 x 22/7 x 2.1 x 2.1 x 2.1=38.808 cm^3now,density =mass/volume8.9 g/cm^3=mass/38.808 cm^3mass =38.808 x 8.9 g=345.39 g |
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