數學公式(中一至中五)

Most of them are in junior forms...

-

Perimeter, Area and Volume

Perimeter of square = length × 4

Perimeter of rectangle = (length + width) × 2

Perimeter of circle = π × radius × 2 or π × diameter

Perimeter of sector = π × radius × 2 × angle/360° + 2 × radius

Area of square = length^2

Area of rectangle = length × width

Area of circle = π × radius^2

Area of triangle = 1/2 × base × height

Area of parallelogram = base × height

Area of trapezium = 1/2 × (upper base + lower base) × height

Area of sector = π × radius^2 × angle/360°

Volume of cube = length^3

Volume of cubiod = length × width × height

Volume of cylinder = π × radius^2 × height

Volume of prism = Base area × height

Volume of pyramid = 1/3 × Base area × height

Volume of cone = 1/3 × π × radius^2 × height

Volume of sphere = 4/3 × π × radius^3

Surface area of cube = 6× length^2

Surface area of cubiod = 2 × (length × width + length × height + width × height)

Surface area of cylinder = 2 × π × radius × height + 2 × π × radius^2

Surface area of prism = Perimeter of base × height + 2 × Base area

Surface area of pyramid = All lateral faces + Base area

Surface area of cone = π × radius × slant height

Surface area of sphere = 4 × π × radius^2

2010-04-09 13:48:48 補充：
Laws of indices

a^m × a^n = a^(m+n)

a^m ÷ a^n = a^(m-n)

(a^m)^n = a^(mn)

(a/b)^n = (a^n)/(b^n)

(ab)^n = (a^n)(b^n)

a^0 = 1

a^(-n) = 1/(a^n)

n√(a^m) = a^(m/n)

2010-04-09 13:49:01 補充：
Pythagoras' theorem

a^2 + b^2 = c^2

2010-04-09 13:52:10 補充：
See you e-mail

Law of indics

identity

買(打釘)本5b書咪得...真無聊