Basic Math Mathematics Formulas

Basic mathematics is primarily about the four operations: addition, subtraction, multiplication and division.

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It involves using fractions, decimals, percents and simple formulas such as determining the area of a triangle, circle, square or a rectangle.

Some Basic Mathematic Formulae are as follows.
Area

1. The area of a circle = πr² (π = 3.1416, r stands for radius).
   The area of a square = a² (a is the length of a side).
   The area of a rectangle = length X width.
   The area of a triangle = ½ X base X perpendicular height.

Surface Area

1. The surface area of a cube = 6a² (a is the length of a side).
   The surface area of a rectangular prism = 2hw + 2hl + 2lw (h is height, w is width, l is length).

Volume

1. The volume of a cube = a³ (a is the length of a side).
   The volume of a rectangular solid = length X width X height.
   The volume of a cylinder = πr²h (r is radius of the circle atop the cylinder and h is the height).

Perimeter

1. The perimeter of a square = 4x (x is the length of a side).
   The perimeter of a rectangle is 2 X (length of the long side of the rectangle + length of the short side).
   The perimeter of a triangle = a X b X c (a, b and c are the length of one of the triangle's side).
   The circumference of a circle = 2πr.

Algebraic equations

1. (a + b)² = a² + 2ab + b².
   (a - b)² = a² - 2ab + b².
   (a + b + c)² = a² + b² + c² + 2(ab + bc + ca).

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