How can we help?

You can also find more resources in our Help Center.

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)