Uniform Density Stars: Struggling with Understanding

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Cythermax
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New poster has been reminded to show their work on schoolwork problems
Homework Statement
Completely stuck on this. Posted it below.
Relevant Equations
Attached the equations
I don't know where to start. This chapter is incredibly confusing for me.
 

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Take it one step at a time. Can you do part (a)? When you say you "don't know where to start", does that mean you don't know enough calculus to integrate equation 10.48? If so, you're probably in trouble.