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## Homework Statement

SO i dont have the radius or the volume but i have an estimate of the density 14.5 10³kg m-3

Im really uncertain of the formula needed to A. get the radius without the volume and vice versa. PLEASE HELP! Thanks in advance!

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- Thread starter flower123
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SO i dont have the radius or the volume but i have an estimate of the density 14.5 10³kg m-3

Im really uncertain of the formula needed to A. get the radius without the volume and vice versa. PLEASE HELP! Thanks in advance!

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Borek

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- #4

mgb_phys

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And the total mass, or the density of the none core part, or the overall average density.

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using the information calculate the mass of the earths core in Kg applying the equation mass= density x volume.

show all working and and include units. give answer in appropriate scientific notation and to an appropraite significant figures.

So i have used the graph provided to get the value of density for the inner core.14.5 10³kg m-3 and the radius of 1221km. SO to calculate the volume of a sphere using these values.

- #6

Borek

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So where is the problem? You have density and radius, you don't need anything else.

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