The number of significant figures that a measurement of 204.45°C has is 5.
What is significant figures?
Significant figures is a figure that is meaningful with respect to the precision of a measurement.
In other words it is a digit that is non-zero, followed by a nonzero digit, or (for trailing zeroes) justified by the precision of the derivation or measurement.
According to this question, a high precision thermometer measures the internal temperature of an oven to be 204.45°C.
This suggests that 204.45°C has 5 significant figures, which are all the digits before and after the decimal point.
Learn more about significant figures at: https://brainly.com/question/14359464
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