diameter of a metallic ball is 4.2 cm what is the mass of the ball if the density of metal is 8.9 gram per centimetre cube
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d=4.2
r=4.2÷2 = 2.1
volume of sphere =4/3 pie r cube
4/3×22/7×2. 1×2.1×2.1
88×0.7×0.3×2.1
38.808 cm cube
mass= volume ×density
=38.808×8.9
=345.39g
r=4.2÷2 = 2.1
volume of sphere =4/3 pie r cube
4/3×22/7×2. 1×2.1×2.1
88×0.7×0.3×2.1
38.808 cm cube
mass= volume ×density
=38.808×8.9
=345.39g
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