Math Formulas

various formulas for math. based on the Mensuration chapter of the Extended Mathematics for IGCSE by David Rayner textbook.
STUDY
PLAY
area of a trapezoid
½(a+b)h
area of a kite
½(product of diagonals)
area of a parallelogram
bh OR basin∅
area of a circle
πr²
circumference
πd
area of a prism
(area of base)(h)
sector area
(∅ ÷ 360)(πr²)
arc length
(∅ ÷ 360)(πd)
volume of a cylinder
πr²h
volume of a pyramid
1/3(base area)(h)
volume of a cone
1/3πr²
volume of a sphere
4/3πr³
surface area of a cylinder
2πr²
surface area of a sphere
4πr²
surface area of a cone
πrl
cosine rule for a side
a² = b² + c² - (2bccosA)