well the volume of an octagon would be different for every octagon.
None. An octagon is a plane figure - that is, it is 2-dimensional. It therefore cannot have any volume.
v=b*h divided by 3
an octagon doesn't have a volume its has and area ecause it is a 2-d figure. to find the area of a 2-d regular figure it is 1/2 apothem * perimeter (apothem is the distance of a line from the center of a polygon, to the midpoint of a side)
Example (assuming that you have an even sided octagon): - height is 18" and L & W is 6 ". it's about 2 " per side of the octagon - Area of Octagon (A) = 4.828(a*a), where a = length of each side of the octagon Volume of Octagon = Area (A) * Height (H) So: Volume = 4.828(a*a)*H or 4.828(2"*2")*18" = 347.6 cu in 1 gallon = 231 cu in So: Gallons = 347.6 cu in * 1g/231 cu in = 1.5 gallons (5.7 liters) The conversion factor for imperial gallons is 277.42 cubic inches per Imperial gallon.
The formula for calculating the volume of an octagonal prism is V = A * h, where A is the area of the base (octagon) and h is the height of the prism. The area of the base can be calculated using the formula for the area of a regular octagon: A = 2(1 + √2) * s^2, where s is the side length of the octagon.
If the octagon at the base is regular, the side of the octagon is s and the height of the prism is h, the area of each octagonal base (Ab) is Ab = 2(√2 +1) s2 The perimeter of the octagon is P = 8s Then the surface area of the prism is As = 2 Ab + Ph The volume of the prism is V = Ab h
You don't find the "volume" of a flat figure. Perhaps you want its surface area.The area for a regular octagon of side "a" is 2 (1 + root(2)) a2, where "root" isthe square root function. If it is not a regular octagon, I don't think there is asimple formula to find the area - you'll have to split it up into simpler figures,for example triangles.==================================Answer #2:Here is the formula, to which the first answer alluded in passing,but which, for some reason, it did not explicitly present:Volume of an Octagon = 0 .
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.
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.