Questions: Round the following number to 3 significant figures 12.215 The correct answer is

Round the following number to 3 significant figures 12.215 The correct answer is
Transcript text: Round the following number to 3 significant figures \[ 12.215 \] The correct answer is $\qquad$
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Solution

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Solution Steps

Step 1: Identify the significant figures

The number \(12.215\) has five significant figures. To round it to three significant figures, we need to consider the first three digits and the fourth digit to determine whether to round up or down.

Step 2: Determine the rounding rule

The first three significant figures are \(1\), \(2\), and \(2\). The fourth digit is \(1\), which is less than \(5\). According to rounding rules, if the digit after the third significant figure is less than \(5\), we do not round up.

Step 3: Round the number

Since the fourth digit is \(1\), we do not round up the third significant figure. Therefore, the number \(12.215\) rounded to three significant figures is \(12.2\).

Final Answer

\[ \boxed{12.2} \]

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