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### Equations - Geometric Shapes

 AREA:Square - length x width, or length of one side squaredRectangle - length x widthTriangle - 1/2 x base x perpendicular heightCube - square of the length of one side x 6Cylinder - (2 x 3.1416 x the radius x the height) + (2 x 3.1416 x the square of the radius)Pentagon - square of the length of one side x 1.720Hexagon - square of the length of one side x 2.598Octagon - square of the length of one side x 4.828Sphere - square of the radius x 3.1416 (pi) x 4Circle - square of the radius x 3.1416Ellipse(1) - long diameter x short diameter x 0.7854Ellipse(2) - long radius x short radius x 3.1416Rectangular Solid - (2 x height x width) + (2 x height x length) + (2 x length x width)PERIMETER (circumference):Square - 4 x the length of one sideRectangle - 2 x (the length of one long side + the length of one short side)Triangle - the length of of one side + the length of one side + the length of one sideCircle(1) - 2 x the radius x 3.1416Circle(2) - 3.1416 x the diameterRegular Pentagon - 5 x the length of one sideRegular Hexagon - 6 x the length of one sideVOLUME:Cube - cube of the length of one sidePyramid - area of the base x height x 1/3Cylinder - square of the radius x 3.1416 x heightSphere - 4/3 x 3.1416 x cube of the radiusCone - square of the radius of the base x 3.1416 x height x 1/3Rectangular Solid - length x width x height