Suppose that $R=63.$

$($Figure $1)$

For help with math skills, you may want to review:

Rearrangement of Equations Involving Multiplication and Division

For general problem$-$solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Simple circuit.

You may want to review $($Page$).$

Figure

$1$ of $1$

Part A

What is the equivalent resistance between points a and b in $($Figure $1)?$

Express your answer with the appropriate units.