SOLUTION: The diameter of an iron ball used in putting the shot is 12cm.the density of iron is 7.8g/cm.calculate the mass of the ball in kg to 3sf

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Question 1196485: The diameter of an iron ball used in putting the shot is 12cm.the density of iron is 7.8g/cm.calculate the mass of the ball in kg to 3sf
Answer by josgarithmetic(39617) About Me  (Show Source):
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volume, %284%2F3%29pi%2A6%5E3=216%284%2F3%29pi=%28288%2F3%29pi=96pi cubic centimeters

The mass,
Density must use grams per CUBIC CENTIMETERS.
7.874 grams per CUBIC centimeters

96%2Api%2Acm%5E3%2A7.874%2A%28grams%2Fcm%5E3%29=youcandothisyourself

Want as kilograms, then 1000 g = 1 kg


96%2Api%2Acm%5E3%2A7.874%28grams%2Fcm%5E3%29%2A%281%2F1000%29%2A%28kg%2Fgrams%29

2.37 kilograms to three significant figures