Formulae Flashcards
Volume of a cylinder
Curved surface area of cylinder
Pie r squared h
2 pie r h
Volume of cone
Curved surface area of cone
1/3 pie r squared h
Pie r l
Volume of sphere
Surface area of sphere
4/3 pie r cubed
4 pie r squared
Stratified sampling
Group number/ total * sample size
Quadratic formula
Form
-b +- the square root of b squared minus 4 a c all dived by 2 a
Ax squared + bx+ c=0
Length of diagonal across a cuboid
D squared =a squared + b squared + c squared
Area of a parallelogram
B*h
Area of sector
Length of arc of sector
Perimeter of sector
Delta/360* pie r squared
Delta/360* pie d
Angle/360 *pie r squared
Density
Speed
Mass/volume
Distance/time
Circumference of circle
Pie d
Histograms
Frequency density= frequency/ class width
Area of triangle
1/2 b h
Volume of pyramid
1/3 * area of base* height
Volume of prism
Area of cross section* length
Volume of cuboid
L w h
Pressure
Force / area
Cosine rule (2 sides and angle in the middle)
a squared=b squared + c squared- 2 b c Cos A
Cosine ( three sides one angle)
CosA = a squared minus b squared minus c squared/ -2 bc
Sine rule (2 sides and 2 angles)
Side
Angle
a/Sin A
SinA/ a
Pythagoras theorem
a squared + b squared = c squared
Area of a rectangle
L w
Area of trapezium
1/2 (a +b) h
Area of a circle
Pie r squared
Area of a non right angled triangle
1/2 a b sin C
