Busy. Please wait.
or

Forgot Password?

Don't have an account?  Sign up
or

taken

why

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size     Small Size show me how

# 7th math formula 17

### Formulas for 7th grade math

TermDefinition
Area of a square A= S^2
Area of a rectangle A=bh
Area of a triangle A= bh/2
Area of a circle A= pie r^2
Circumference of a Circle C=pi d or C= 2pie r
Perimeter of a Rectangle P=2l+2w
Perimeter of a triangle P=S1+S2+S3
Perimeter of any shape P= sum of all sides
Constant of Proportionality Y=Kx and K=y%/x
Percent Proportion is/of=%/100
Percent of change proportion Change=big-small Change/Original=%/100
Tax,Tip,Commission is/of=%/100,then (+)
Sales,Discount,Markdown is/of=%/100,then (-)
% of error =[ev-av/av]x 100%
Simple interest I=PRT
Created by: 18ortizm