Question

question 1
round off 3.72593 ml to three significant figures.

Explanation:

Step1: Identify significant figures

The number is 3.72593. We want three significant - figures.

Step2: Look at the fourth digit

The fourth digit after the decimal point is 5. According to the rounding - off rule, when the digit to be rounded is 5 and the digits after it are not all zeros, we round up.

Step3: Round the number

The first three significant figures are 3.72. Since the fourth digit is 5, we round up the 2 to 3. So the number rounded to three significant figures is 3.73.

Answer:

3.73 mL