How do I calculate the mas(in kg) of a cube of Iridium metal 5.25 inches at a density of 22.5g/cm3? Help this question stomped me for a week?

Question

anonymous · Answer

You have density and you need mass--what is the 5.25 inches?  The volume or just the measurement of one edge of the cube?

anonymous · Answer

If it is volume, then use the equation
$$d(density) = \frac{ m (mass) }{ v (volume)}$$
If the 5.25 inches is a side measurement, then calculate the volume by multiplying the length times the width times the height--all the same since it's a cube.

Also, density isn't normally expressed in kg/inches cubed but I suppose if that unit is okay for an answer then it'll do.  I would convert it because I fancy the Metric system. :)

anonymous · Answer

Oops, I just noticed the units on your density--you have to convert everything to grams and centimetres cubed.  Your mass must be in grams and your volume in cubic centimetres to be able to use the equation above.

anonymous · Answer

Did it work out? :)