We have the following formula for the area of a rectangle:
[tex]A=l\cdot w[/tex]where 'l' is the length and 'w' is the width.
In this case,we have the following:
[tex]\begin{gathered} l=12ft \\ w=5ft \\ \Rightarrow A=(12ft)(5ft)=60ft^2 \\ A=60ft^2 \end{gathered}[/tex]therefore, the area of the mural is 60 square feet
