radius of an iron sphere is 0.21 cm If density of iron is 7.80g/cc calculate mass

Solution:

Radius of iron sphere , r = 0.21 cm;

Density of iron is, d = 7.80g/cc

Mass of the iron sphere, m = ?

Mass = Volume *Density M = 43πr3 * 7.80M = 43*227*0.213 *7.80M = 0.303 g

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