Fill in the Blanks

Short Answer

Fill in the blanks.
 

$\begin{array}{l}\hline { \text { Pulley A } }\quad\quad\quad\quad\quad\quad \text { Pulley B } \\\begin{array}{ | l | l | l | l | } \hline \text { Diameter } & \mathrm{rpm} & \text { Diameter } & \mathrm{rpm} \\\hline 41 \mathrm{~cm} & 460 & {\mathrm{cm}} & 820 \\\hline 15 \mathrm{~cm} & 900 & 72 \mathrm{~cm} & \\\hline\end{array}\end{array}$