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# 7th Grade EOG Fomula

Area of a Rectangle lxw
Area of a Triangle (bxh)/2
Area of a Circle TTr^2
Circumference of a Circle 2^TTr
Volume of a Rectangular Prism lxwxh
Volume of a Triangular Prism (bxhxh)/2
Volume of a Cylinder TTr^2h
Surface Area of a Rectangular Prism MAD! [(lxw)+(lxh)+(wxh)]x2
Percent Proportion change/original=%/100
Surface Area of a Cylinder 2TTr^2+2TTrh
Interest Formula I=PxRxT
Sales Tax Total Cost=Original Price+Tax Amt. Tax Amt.=\$xTax%(as a decimal)
Tip Total Cost=Original Price+Tip Amt. Tip Amt.=\$xTip%(as a decimal)
Discount Total Cost=Original Price- Discount Amt. Discount Amt.=\$xDiscount%(as a decimal)
Commission C=\$x%(as a decimal)
Range Upper Extreme-Lower Extreme
Mean Sum of all #'s divided by the total items
Interquartile Range Upper Quartile-Lower Quartile
Created by: TraciR( :

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