Product timeline. 1  1982 â Diet Coke is introduced, becoming the largest-selling low-calorie soft drink in America. 2  1983 â Diet Coke is introduced in the UK. 3  1986 â Diet Cherry Coke is introduced in American markets. 4  1994 â Diet Coke changes logo. 5  1999 â Diet Cherry Coke changes logo. 6  2001 â Diet Coke with Lemon is introduced.
21Â°C = 69.8Â°F. Use the formula F = 9/5C + 32. To convert from Celsius to Fahrenheit, multiply the number by 9, divide by 5, and add 32. In this instance, 21 x 9 = 189 / 5 = 37.8 + 32 = 69.8. Therefore, 21 degrees Celsius is equal to 69.8 degrees Fahrenheit.se the formula F = 9/5C + 32. To convert from Celsius to Fahrenheit, multiply the number by 9, divide by 5, and add 32.
Well, possibly, but the true difference is that the two countries use different temperature scales. The United States favors the Fahrenheit scale, in which 37Â° is wintry. Canadians, and most of the world, use the Celsius scale, in which 37Â° is equivalent to 98.6Â° Fahrenheitâbody temperature! Scientists usually use Celsius, in which 0 is water's freezing point (32Â°F) and 100 is its boiling point (212Â°F). (To convert between scales, see the table of measurements at the entry for measurement.) Scientists also use the Kelvin scale, where 0 is as cold as anything could ever get, which is about -273Â° Celsius.