Question

to the nearest square unit, what is the area of the regular octagon shown below

Answer 1

Look at the picture.

$A_\Delta=\dfrac{15\cdot18.1}{2}=\dfrac{271.5}{2}=135.75$

Area of the regular octagon:

$A=8\cdot A_\Delta\to A=8\cdot135.75=1086$

Answer: 1086 square units.