# Question #6626e

##### 1 Answer

#### Explanation:

To go from temperature expressed in *degrees Celsius*, *Kelvin*,

#"t K" = "t"^@"C" + 273.15#

In simple terms, the origin of the Kelvin scale, **cannot be lower** than *negative* temperatures in Kelvin.

Now, since you can go from degrees Celsiu to Kelvin by **adding** **subtracting**

#"t"^@"C" = "t K" - 273.15#

In your case, a temperature of

#"t"[""^@"C"] = "245 K" - 273.15 = -28.15^@"C"#

You need to round this off to

#"t"[""^@"C"] = color(green)(-28^@"C")#