Answer
See below.
Work Step by Step
The contrapositive of $p\rightarrow q$ is $\sim q\rightarrow p$.
The converse of $p\rightarrow q$ is $q \rightarrow p$.
The inverse of $p\rightarrow q$ is $\sim p\rightarrow q$.
Hence here the converse is: $r \rightarrow \sim p$. The inverse: $p\rightarrow \sim r$. The contrapositive: $\sim r\rightarrow p$.