Formulas Index

Welcome to Wiki Formulas --Online Calculators--

This website contains a database of formulas. Our current focus is perimeter, area and equations formulas for plane geometry shapes.

Online Calculators of Area Formulas

Circle Area

Area of a Circle

Ring Area

Area of a Ring

Semicircle Area

Area of a Semicircle

Equiolateral Triangle Area

Area of a Equilateral Triangle

Isosceles Triangle Area

Area of a Isosceles Triangle

Square Area

Area of a Square

Isosceles Trapezoid Area

Area of a Isosceles Trapezoid

Trapezoid Area

Area of a Trapezoid

Right Triangle Area

Area of a Right Triangle

Scalene Triangle Area

Area of a Scalene Triangle

Rhombus Area

Area of a Rhombus

Pentagon Area

Area of a Pentagon

Hexagon Area

Area of a Hexagon

Hexagram Area

Area of a Hexagram

Heptagon Area

Area of a Heptagon

Heptagram Area

Area of a Heptagram

Octagon Area

Area of a Octagon

Nonagon Area

Area of a Nonagon

Nonagram Area

Area of a Nonagram

Decagon Area

Area of a Decagon

Decagram Area

Area of a Decagram

Dodecagon Area

Area of a Dodecagon

Dodecagon Area

Area of a Dodecagram

Hendecagon Area

Area of a Hendecagon

Hendecagram Area

Area of a Hendecagram

Stadium Area

Area of a Stadium

Area of a circle calculator and 25 more area formulas: area of a square, triangle, pentagon, hexagon, and many more...

See all area formulas

Thoughts on Mathematics

Mathematics is the language with which God has written the universe.
- Galileo Galilei (1564/1642)

I have hardly ever known a mathematician who was capable of reasoning.
- Plato (427—347 B.C.E.)

Mathematics is the queen of the sciences.
- Carl Friedrich Gauss (1777/1855)

There is geometry in the humming of the strings, there is music in the spacing of the spheres (planets).
- Pythagoras (569/500 B.C.E)

The laws of nature are but the mathematical thoughts of God.
- Euclid( c. 300 B.C.E)


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