Given the information on the picture, we can find the apothem of the hexagon using the following formula:
![a=\sqrt[]{(3)/(4)s^2}](https://img.qammunity.org/2023/formulas/mathematics/college/9zb3oba0xhjaorcsj162kikv62g0brqha1.png)
in this case, we have the following:
![\begin{gathered} a=\sqrt[]{(3)/(4)(12)^2}=\sqrt[]{108}=10.4 \\ \Rightarrow a=10.4 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/lszrgz9enw6fg0fpf0eiwcat6ricfic51k.png)
now that we have that the apothem is a = 10.4, we can find easily the perimeter by multiplying by 6 the measure of the side:
![P=6(12)=72\operatorname{cm}]()
finally, now that we have the perimeter is P = 72 cm and the apothem, we can find the area of the hexagon:
![\begin{gathered} A=(P\cdot a)/(2) \\ \Rightarrow A=(72(10.4))/(2)=374.4\operatorname{cm}^2 \end{gathered}]()
therefore, the area of the hexagon is 374.4cm^2