J.R. S. answered 10/29/20
Ph.D. University Professor with 10+ years Tutoring Experience
Add 273.15 to ºC to get K
When adding numbers, sig figs is based on the value with the fewest decimal places.
29.6 + 273.15 = 302.75ºC
Since 29.6 has 1 decimal place, we round our answer to 1 decimal place = 302.8ºC