Question

Pre Calculus
Arc Length and Area of Sectors

Answer 1

hey so the answer is

Answer 2

and that's how i got it

Answer 3

\[\theta=\frac{ l }{ r }=\frac{ 19 }{ 4}=4.75~radians=\frac{ 180 }{ \pi }\times4.75\approx 272.155\]
\[\approx272.2^\circ\]

Answer 4

so you are correct.