The Area of a Square equation, (A = s2), computes the area 
A Square of a square in the units of the sides squared. For this equation, the input is only one side length. The Square Area is a special case of the Rectangle Area. A square is a rectangle where base equals height.
INSTRUCTIONS: Choose units (e.g. feet or meters) and enter the following:
- (s) side length
Area of a Square (A): The calculator will return the area in square meters, but the area can be automatically converted to other area units such as square feet or acres via the pull-down menu.
For the Volume of Square topped column, CLICK HERE.
Regular Polygon Information
A regular polygon
is a geometric shape with three or more straight sides where every side is the same length and every angle between connecting sides are the same angle. Because of the symmetry of the regular polygon, all the vertices of the polygon can be constructed to touch a circle in which the regular polygon is inscribed and all the chords that are polygon sides will then obviously be of equal length . Likewise, because of the regular polygon's symmetry, a circle constructed to be inscribed in a regular polygon and touching the polygon will touch the regular polygon at the midpoint of the polygon side. As shown in the pictures, Figure 1 and Figure 2, lines from the regular polygon's vertices to the circle's center form n isosceles triangles of equal area.
The names of polygons vary based on the number of sides as follows:
- triangle - 3 sides
- square - 4 sides
- pentagon - 5 sides
- hexagon - 6 sides
- heptagon - 7 sides
- octagon - 8 sides
- nonagon - 9 sides
- decagon - 10 sides
- hendecagon - 11 sides
- dodecagon - 12 sides
Common Regular Polygon Functions
Polygon Area Calculators:
- Polygon Area from the Number of sides and Length of Sides
- Polygon Area from the Number of Sides and Outside Radius
- Area of a Polygon Segment (triangle) from the Number of Sides and Inscribed Radius
- Polygon Area from the Number of Sides and Inscribed Radius.
Polygon Side Calculators
- Length of a Polygon Side from the Number of Sides and Outer Radius
- Length of a Polygon Side from the Number of Sides and Inner Radius
- Length of a Polygon Side from the Number of Sides and Area in Poloygon
Polygon Perimeter Calculators
- Perimeter of a Polygon from Number of Sides and Length of Sides
- Perimeter of a Polygon from Number of Sides and Outer Radius
- Perimeter of a Polygon from Number of Sides and Inner Radius
- Polygon Perimeter from the Area and Number of Sides
Polygon Radius
3D Polygon Shapes
Other Polygon Calculators
- Interior Angle of a Regular Polygon based on the number of sides
- Area of Circle - Circle approximates a polygon as the number of sides approaches infinity.
- Area of Triangle - Three Sides
- Area of a Square - Four Sides
- Area of Pentagon - Five Sides
- Area of Hexagon - Six Sides
- Area of Heptagon - Seven Sides
- Area of Octagon - Eight Sides
- Area of Nonagon - Nine Sides
- Area of Decagon - Ten Sides
- Area of Hendecagon - Eleven Sides
- Area of Dodecagon - Twelve Sides