Respuesta :

89972 is already rounded to 3 significant figures.

The approximation of 89972 to three significant digits is 900

How to round the number?

The number is given as:

89972

To round to three signficant digits, we simply count three digits from the left.

i.e. 899

Next, we start the approximation from the next digit

i.e. 7

Hence, the approximation of 89972 to three significant digits is 900

Read more about significant digits at:

https://brainly.com/question/24491627

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