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:
Diameter of the ball = 4.2 cm
Radius = 4.2/2 = 2.1 cm
Volume of the ball ---> 4/3πr^3
4/3 x 22/7 x 2.1 x 2.1 x 2.1 = 38.808 cm^3
Volume = Mass / Density
Mass = Volume x Density
Mass = 38.808 x 8.9 = 345.3912 g
Step-by-step explanation:
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