equations Flashcards
area of a right angle triangle
base x height
//////////////////////
2
area of a trapezium
h ( a + b )
//////////////////////
2
area of a circle
pi x r^2
circumference of a circle
pi x d
volume of a cube
L x W x H
area of prisms
cross section area x length
area of a cylinder
pi x R^2 x H
volume of spheres
4 x pi x R^3
////////////////////////
3
surface area of spheres
4 x pi x R^2
volume of a cone
pi x R^2 x H
//////////////////////////
3
curved surface area of a cone
pi x R x L
volume of a pyramid
1/3 x area of base x H
density equation
mass
////////////////////
volume
speed equation
distance
//////////////////////
time
pressure
force
/////////////////
area
area of any triangle
1/2 x A x B x Sin(0)
equation of a circle
x^2 + y^2 = R^2
sum of interior angles for a regular polygon
(number of sides - 2) x 180
interior angles if a regular polygon
(number of sides - 2) x 180
//////////////////////////////////////
number of sides
exterior angle of a regular polygon
360
////////////////////////////
number of sides
depreciation
original x ( 1 - percentage )
/////////////////////////////// ^ of time
100
percentage change
new - original
——————– x 100
original
length of diagonal across a cuboid
d^2 = a^2 + b^2 + c^2
area of a sector
angle
////////. x pi x R^2
360
