Either of these equations can be rearranged to obtain the other one, so you need to learn only one of them. When the temperature reaches "100. F in the shade," it"s hot. What is this temperature on the Celsius scale? Plan We use the relationship __C ? Solution 1.0C 1xF 1.8F 32F2 to carry out the desired conversion. When the absolute temperature is 400 K, what is the Fahrenheit temperature?