The area of a rectangle is given by:
[tex]\begin{gathered} A=w\cdot h \\ Where\colon \\ A=Area \\ w=width \\ h=Height \end{gathered}[/tex]
So, the area of this rectangle is:
[tex]\begin{gathered} A=w\cdot h \\ w=2+4=6 \\ h=3 \\ so\colon \\ A=3\times6=18 \\ or \\ A=(2+4)\times3=3\times2+3\times4=18 \end{gathered}[/tex]
So, the answers are:
[tex]\begin{gathered} 3\times6 \\ and \\ 3\times2+3\times4 \end{gathered}[/tex]
