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7th math formulas KB
Math forumlas
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=pir^2 |
Circumference of a circle | c=pid or c2=pir |
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 | is/of = %/100y=kx+k=y/w |
percent proportion | is/of = %/100 |
percent of change proportion | change/original = %/100 |
tax,tip,markup,commission | is/of = %/100,then (+) |
Sales,Discount,Markdown | is/of=%/100,Then (-) |
% of error | =|EV-Av/Av|x100% |
Simple interest | I=prt |