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.
What is 52 degrees Fahrenheit in Celsius? Exactly 52 Â°F is equal to 11.11 Â°C.  The conversion formula is Celsius temperature = 5/9 x (Fahrenheit temperature - 32)  This can be shown from:   (212 - 32) * (5/9 â¦) =   (180) * (5/9) =   900/9 = 100 where 212 Â°F is equal to 100 Â°C.his is how you convert Celsius to Fahrenheit or use the equation F â¦ = (9/5)C + 32   In this case, the answer is about 125.6 degrees Fahrenheit. 125.6Â°F.