The answer depends on whether or not the octagon is regular and also on what information about its side lengths, angles, etc you have.
Numbers have square roots. Shapes don't.
The area of an octagon with each side being 8 feet is 309 square feet.
No, but an octagon and a square can tessellate.
Square feet and square foot can be expressed as: ft2
find the width of a rectangle if its area is 9/28 of a square foot
It is not possible to answer this question since a 40 foot octagon could be extremely long.
7??
Numbers have square roots. Shapes don't.
The area of an octagon with each side being 8 feet is 309 square feet.
An octagon is a square with the corners cut off, so it has 8 equal sides and all angles are the same, like an American Stop sign. If each edge of an octagon is 1 foot, then the area is 4.828 square feet (2+2root2). For an octagon with an edge length of x feet, the area would be 4.828 times x squared.
An octagon is a polygon. The name refers to its shape, not its size. It can have an area of less than a billionth of a square foot to more than a billion square feet.
There is nothing in the question to indicate that it is a regular octagon and since that cannot be assumed, there is not enough information to calculate its area. Even if it were regular, the answer will depend what the 8-foot measure refers to: the length of a side of the octagon, its diameter, its apothem etc.
To turn a 9x9 square into an octagon you can cut corners off the square. It will not be a regular octagon though.
No, but an octagon and a square can tessellate.
Square feet and square foot can be expressed as: ft2
To find how many square feet are in an octagon you basicly just have to find the area of the octagon in this problem it would be 8x8 to get the answer how to find the answer is that you must first find out how many sides your shape has then multiply your sides length in this case it happens to be 8 for both of the multiples thus 8x8 equals 64.
find the width of a rectangle if its area is 9/28 of a square foot