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bigred-14-

7th grade math formuls

QuestionAnswer
Area = base x height or l x w Circumference = 2 radius pi
area of a circle Area = pi x radius ^2
area of trapezoid area = height(base 1 + base 2 )) /2
area of a triangle Area = (base x height) / 2
area of a rectangle Area = base x height or l x w
simple interest interest= principal x rate x time (i=prt)
discount 1. original price x discount % (decimal) = discount amt 2. total amt. = original price discount amt
tip 1. original price x tip % (as decimal) = tip amt 2. total amt = original + tip amt
sales tax original price x tax %(as a decimal) = tax amount 2. total amt = original + tax
Created by: 17argabl
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