GCSE Maths Equations Flashcards
area of a rectangle
length x width
area of parallelogram
base x height
area of triangle
1/2 x base x height
area of a trapezium
1/2 x ( a +b) x h
volume of cuboid
length x width x height
volume of a prism
area of a cross section x length
volume of a cylinder
pi x radius squared x height
volume of a pyramid
1/3 x area of the base x height
area of a circumference
pi x diameter
area of a circumference
2 x pi x radius
area of a circle
pi x radius squared
speed equation
speed= distance / time
density equation
density= mass / volume
pressure equation
pressure = force / area
Pythagoras theorem
you use the Pythagoras theorem on a right angled triangle
a^2 =b^2 + c^2
trigonometric ratio
sin x = opposite/hypotenuse
cos x = adjacent/hypotenuse
tan x = opposite/adjacent
trigonometric formula
sine rule
a/sin a = b/sin b =c/sin c
trigonometric formula
cosine rule
a^2 = b^2 + c^2 -2bc cos A
trigonometric formula
area of a triangle
1/2 x a x b x sin C
quadratic equation
ax2 + bx + c = 0 ·
Quadratic Formula: x = −b ± √(b2 − 4ac)/ 2a
