Solve the question below, please

Answer:
b = 26.62
Step-by-step explanation:
You are given 2 sides and one angle. So the best option is to use cosine law.
[tex]b^{2} = a^2 + c^2 - (2ac)cos[/tex]θ
[tex]b^{2} = 26^2 + 11^2 - (2*26*11)cos30[/tex]
[tex]b^{2} = 708.77[/tex]
[tex]b = 26.62[/tex]