How do you convert 840 inches to cm? Algebra Linear Equations Equations with Ratios and Proportions 1 Answer Konstantinos Michailidis Sep 15, 2015 1inche =2.54 cm so it is 840*2.54=2032 cm Answer link Related questions What is the difference between proportions and ratios? What is the difference between ratios and rates? What are cross products? How do you write "12 meters to 4 floors" as a rate? How do you write and simplify "150 boys to 175 girls" as a ratio? How do you solve #\frac{6}{19} = \frac{x}{11}#? How do you solve #\frac{n+1}{11} = -2#? How do you solve #\frac{0.1}{1.01} = \frac{1.9}{x}#? How do you use proportions to solve how much money the restaurant made if it serves 250 people... How do you solve #x/4-7=13#? See all questions in Equations with Ratios and Proportions Impact of this question 10719 views around the world You can reuse this answer Creative Commons License