Find the length of the entire perimeter of the region inside
r
=
13
sin
θ
\displaystyle {r}={13}{\sin{\theta}}
r
=
13
sin
θ
but outside
r
=
4
\displaystyle {r}={4}
r
=
4
.
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\displaystyle
Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity