Area of a sector
0.5θr^2
Curved length of a sector
rθ
Surface area of a cylinder
2πrh +2πr^2
Volume of a cylinder
πr^2h
surface area of a cone
πr(r+L)
volume of a cone
1/3πr^2h
surface area of a sphere
4πr^2
volume of a sphere
4/3πr^3
area of an ellipse
πr1r2
area of a rhombus/kite
Lh/2
area of a triangle
1/2absinC