Answer:
→ Formula:
[tex]{ \tt{area = side \times side}}[/tex]
• substitute for the area:
[tex]{ \tt{149 = {s}^{2} }} \\ { \tt{ {s}^{2} = 149 }}[/tex]
• take square roots on either sides:
[tex]{ \tt{ \sqrt{ {s}^{2} } = \sqrt{149} }} \\ \\ → \: { \boxed{ \tt{side \: length \approx12 \: inches}}}[/tex]