Respuesta :

gmany
Look at the picture.

[tex]A_\Delta=\dfrac{15\cdot18.1}{2}=\dfrac{271.5}{2}=135.75[/tex]

Area of the regular octagon:

[tex]A=8\cdot A_\Delta\to A=8\cdot135.75=1086[/tex]

Answer: 1086 square units.
Ver imagen gmany