Answer:
337.5 K or 337.65 K
Explanation:
Celsius to Kelvin
Celsius + 273 = Kelvin
64.5 + 273 = 337.5 K
OR
Celsius to Kelvin
Celsius + 273.15 = Kelvin
64.5 + 273.15 = 337.15 K
Any of the answer can be written. To convert Celsius to kelvin, 273.15 is to be added to the temperature in Celsius. But usually, 273 is added instead of 273.15
Hope this answer helps you.