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MiNk2019314
As is, 56.78 has 4 sig figs. To get it to one sig fig, you need to round to the nearest ten, so you would get 60, which as one sig fig.

A significant figure is a number whose digits add to the significance of its value.

56.78 in one significant figure is 60

When we are rounding a number to the nearest significant figure, we apply the following rules:

  • Digits without zeros in them are always significant

  • If there are zero(s) in the digits of a number, the zero(s)are always significant

  • The zero in front of the digits of a number is insignificant. For example: 097 = 97 the zero is insignificant.

  • Zeros after the digits of a number are only significant if the number contains a decimal point.

Hence, rounding 56.78 to one significant figure, the first number is 5, the number after it is a value bigger than 5, so we add one to 5 and the remaining digits become zero.

Therefore, 56.78 in one significant figure is 60

To learn more, visit the link below:

https://brainly.com/question/623263

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