Appendix 6: Some Useful Mathematics

Area of a rectangle of sides a and b	A = ab
Volume of a rectangular solid of sides a, b, and c	V = abc
Hypotenuse of a right triangle whose other sides are a and b
Circumference of a circle of radius r	C = 2πr
Area of a circle of radius r	A = πr2
Surface ares of a sphere of radius r	A = 4πr2
Volume of a sphere of radius r	V = 4πr3/3
Value of π	π = 3.1415926536