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Question
The mass of an iron ball is 312 g. The density of iron is 7.8 g cm-3. Find the volume of the ball.
Solution
Given , Mass M = 312 g
Density d = 7.8 g `"cm"^-3`
Since , d = `"M"/"V"` ⇒ V = `"M"/"d"`
Hence , volume of an iron ball V = `312/7.8` = 40 `"cm" ^3`
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