The perimeter is the sum of the side lengths: $\displaystyle{P}={12}+{5}+{5}+{15}+{9}={46}\usepackage{cmbright}\Huge\$

The trapezoid has bases of 15 and 12 and height $\displaystyle{9}-{5}={4}\usepackage{cmbright}\Huge\$ . Its area is $\displaystyle{A}=\frac{{{15}+{12}}}{{2}}\cdot{4}={54}\usepackage{cmbright}\Huge\$

The area of the rectangle is $\displaystyle{A}={15}\cdot{5}={75}\usepackage{cmbright}\Huge\$ . The total area is $\displaystyle{54}+{75}={129}\usepackage{cmbright}\Huge\$ .