Question

1. $m^{2}=144$
2. $64 = r^{2}$

Explanation:

Step1: Solve for \(m\) in \(m^{2}=144\)

Take square - root of both sides. \(m=\pm\sqrt{144}\)

Step2: Calculate the square - root value

\(m = \pm12\)

Step3: Solve for \(r\) in \(64 = r^{2}\)

Take square - root of both sides. \(r=\pm\sqrt{64}\)

Step4: Calculate the square - root value

\(r=\pm8\)

Answer:

For \(m^{2}=144\), \(m = 12\) or \(m=-12\); for \(64 = r^{2}\), \(r = 8\) or \(r=-8\)