$\sf\textbf{Tip\:speed\:of\: main\:rotor}\:\:=\:\pi \times$
$\sf\textbf{diameter\:of\:main\:rotor} \times {rotational\: speed\:of main\:rotor}$
$\implies\sf\textbf\:=\:\pi \times 7.59\:{ m} \times 448\:{\:rev/min}$
$\implies\sf\textbf\:=\:10,676.68\:{\:m/min}$
$\sf\textbf\:{Tip\:speed\:of\:tail\:rotor}\:=\:\pi \times$
$\sf\textbf\:{diameter\:of\:tail\:rotor} \times\:{rotational\:speed\:of\:tail\:rotor}$
$\implies\sf\textbf\:=\:\pi \times 1.00\:{ m} \times 4140\:{\:rev/min}$
$\implies\red\bigstar{\boxed{\textsf{\textbf{\:=\:13,015.93 \text{ m/min}}}}}$



