The diameter of metallic ball is 4.2cm what is the mass of the ball ,if the density of the metal is 8.9g per cm³
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Answer:
mass = 345.05 gram = 0.345 kg
Explanation:
The diameter of metallic ball = 4.2cm
Radius = 4.2/2=2.1cm
volume of ball = (4/3)pi(radius)^3
volume=(4/3)×(22/7)×(2.1)^3
volume = 38.77 cm^3
Density = mass/volume
8.9 = mass/38.77
mass = 8.9×38.77
=> mass = 345.05 gram = 0.345 kg
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