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.
Exactly 85 Â°F is equal to 29.44 Â°C The conversion formula is Celsius temperature = 5/9 x (Fahrenheit temperature - 32) Start by taking the number in Fahrenheit and subtr â¦ acting 32.Then multiply the number by 5, and then divide by 9. 85 - 32 = 53 53 x 5 = 265 265 / 9 = about 29.44 It is about 29.44.o convert from degrees Fahrenheit to degrees Celsius, subtract 32, multiply by 5, and divide by 9. In this instance:    85 - 32 = 53 x 5 = 265 / 9 = 29.4 recurring (th â¦ at is, 29.4444..)    Therefore, 85 degrees Fahrenheit is equal to 29.4 recurring degrees Celsius. 8 people found this useful.