Perimeter of a square: [ s + s + s + s ]

s : length of one side

Perimeter of a rec tangle: [ l + w + l + w ]

l : length

w : width

Perimeter of a triangle: [ a + b + c ]

a, b, and c: lengths of the 3 sides

Geometry Formulas ►Area

 Area of a square : [ s . s ]

s : length of one side

Area of a rectangle : [ l . w ]

l : length

w : width

Area of a triangle : 1/2 . [ b . h ]

b  : length of base

h: length of height

Area of a trapezoid: 1/2 . [ b1 + b2 ] . h

b1 and b2 : parallel sides or the bases

h : length of height

Geometry Formulas ► volume

Volume of a cube: [ s . s . s ]

s : length of one side

Volume of a box:  [ l . w . h ]

l : length

w : width

h : height

Volume of a sphere: (4/3) × pi × r³

r : radius of sphere

Volume of a triangular prism: area of triangle . Height = (1/2 base × height) .Height

Base :  length of the base of the triangle

Height : height of the triangle

Height : height of the triangular prism

Volume of a cylinder: pi . r² . Height

pi : 3.14

r : radius of the circle of the base

Height : height of the cylinder