How Do You Calculate the Density of a Proton?

[GlobalDuty]

Homework Statement

A proton, which is the nucleus of a hydrogen atom, can be modeled as a sphere with a diameter of 2.4 fm and a mass of 1.67 multiplied by 10-27 kg. Determine the density of the proton.

Homework Equations

Volume=(4/3)pi*r^3
Density=mass/Volume

The Attempt at a Solution

I first got the radius: 1.2 * 10^-15
To get the volume i did: (4/3)*pi*(radius)^3 and i got 7.2 * 10^-45 as the volume
To get density i just jiust divided 1.67*10^-27/7.2*10^-45
and i got 2.31 *10^17 as the answer which is wrong.

 

[Delphi51]

I get the same answer.

 

[GlobalDuty]

I get the same answer.

o well. thanks for replying