temperature?

0 Kelvin is equal to -273.15°C

In other words:
C = K - 273.15

Or:
K = C + 273.15

So:
K = 20 + 273.15
K = 293.15

Answer:
293.15 Kelvin

Add 273

Hence
20 + 273 = 293 K

NB ; The Kelvin scale is quoted as 'K' , NOT ' degrees K'.

293. 273+20.

293.15