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7th math formula 17
Formulas for 7th grade math
Term | Definition |
---|---|
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 |