The sum of its 8 sides
40 inches
if you are reading this i dont no i was just boerd and i wanted to answer the question lol
Add up all 5 side lengths for the peremiter
An octagon has 8 angles.An octagon has 8 angles.An octagon has 8 angles.An octagon has 8 angles.
an octagon...
No, but an octagon is.
The formula for perimeter of a rectangle is: P=2L+2W where L is the length and W is the width of the rectangle.
An octagon-based prism.An octagon-based prism.An octagon-based prism.An octagon-based prism.
That is because an octagon is singular and polygons is plural. An octagon is a polygon, and octagons are polygons but a octagon cannot be a polygons.
A octagon is a octagon without the same angles as the others.
well the volume of an octagon would be different for every octagon.
An 8 sided shape is an octagon