Explanation:
Mass = Density × Volume or m=pV
Density = 6
Volume = 13
6 × 13 = 78
The mass of the iron ball is 78.
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Work Shown:
d = density = 6 grams per cm^3
m = mass = unknown
v = volume = 13 cm^3
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d = m/v
dv = m
m = dv
m = 6*13
m = 78 grams
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