Circumference
2πr or πd
Arc length
(ø/360)x 2πr
Area of a rectangle
Base x Height
Area of a triangle
½ base x Height
Area of a parallelogram
Base x Height
Area of a trapezium
(a+b/ 2) x Height
Area of a circle
πr²
Area of a sector
(ø/360) x πr²
Surface area
Sum of area of all faces
Surface area of open or solid cylinder
Formula in sheet + Area of 1 or 2 circles (according to number of ends)
Surface area of solid cone
Formula in sheet + Area of 1 circle
Volume
Length + width + height
Volume of solid with uniform cross-section
Area of cross section x Length
Density
Mass ÷ Volume