 The Math ForumFor anyone with a love of math Home Calendar Gallery FAQ Search Memberlist Usergroups Register Log in

 The Math Forum :: Middle School Topics :: Geometry Share

# Simple Geometry Formulas: AuthorMessage

Hardcore TMF user  Number of posts : 163
Age : 22
Location : Pleasanton, CA
Registration date : 2008-08-13  Subject: Simple Geometry Formulas: Wed Aug 13, 2008 3:46 pm Area of circle: pi*r^2, where r is the radius of the circle.Area of square: s^2, where s is the side of the square.Area of rectangle: l*w, where l and w are the two sides.Area of parallelogram: b*h, where b is the base and h is the height.Area of triangle: 1/2*bh, where b is the base and h is the height.This should start you off.   School Math Nerd  Number of posts : 40
Age : 24
Location : Lost
Registration date : 2008-08-13  Subject: Re: Simple Geometry Formulas: Wed Aug 13, 2008 7:00 pm Volumes+a little bit past the basicsVolume of a cube: r^3Volume of a rectangular prism: xyzVolume of a sphere: 4/3 pi r^3Volume of a cylinder: pi r^2*hVolume of a cone: 1/3 pi r^2*hArea of a rhombus: 1/2*x*y (x and y are the diagonals)Area of a ellipse: 1/2*a*b (a and b are the semi-axis)Area of a trapezoid: 1/2*h*(a+b) (a and b are the bases)   Starting Member Number of posts : 13
Age : 23
Location : IN UR MOM
Registration date : 2008-08-13  Subject: Re: Simple Geometry Formulas: Wed Aug 13, 2008 7:28 pm An unrelated note but interestingThe derivative of the Volume of a sphere equals its surface areaf(x)=4/3 pir^3f'(x)=4/3(3r^2)pi=4pir^2    School Math Nerd  Number of posts : 40
Age : 24
Location : Lost
Registration date : 2008-08-13  Subject: Re: Simple Geometry Formulas: Thu Aug 14, 2008 7:25 am Surface AreasSA of a cube: 6r^2SA of a rectangular prism: 2xy+2yz+2xzSA of a sphere: 4pi r^2SA of a cone: pi*r*l+pi r^2SA of a cylinder: d*pi*h   Sponsored content  Subject: Re: Simple Geometry Formulas:   Simple Geometry Formulas: Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum Jump to: Select a forum||--Dojo's Math Encyclopedia (Unfortunately sadly small)|   |--Algebra|   |--Counting & Probablilty|   |--Geometry|   |--Number Theory|   |--Middle School Topics|   |--Algebra|   |--Counting & Probability|   |--Geometry|   |--Number Theory|   |--Problem Solving|       |--Marathons|   |--High School Topics|   |--AMC 10/12|   |--AIME/USAMO/IMO|   |--General Discussion|   |--Suggestions? Questions?|   |--Pictures|   |--Test|   |--Moderator Forum|   |--All other things we nerds do|   |--Just for laughs|   |--School and Personal life|   |--Our lives|   |--Sports|   |--Games|   |--Arcade|   |--Suggestions for Arcade|   |--Strategy games (Chess, checkers,rubiks cube)|   |--Basket    |--Basket