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What is the value of \(\sqrt{225} \div \sqrt{9}\)?
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Answer and explanation
Correct answer: 5
Since \(225=15^2\) and \(9=3^2\), we have \(\sqrt{225}=15\) and \(\sqrt{9}=3\). Therefore, \(15\div3=5\), so option C is correct. Options B and D result from an incorrect division calculation. In an exam, evaluate both square roots first and then divide.
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What is the correct answer to this question?
5
Why is this the correct answer?
Since \(225=15^2\) and \(9=3^2\), we have \(\sqrt{225}=15\) and \(\sqrt{9}=3\). Therefore, \(15\div3=5\), so option C is correct. Options B and D result from an incorrect division calculation. In an exam, evaluate both square roots first and then divide.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Real Numbers.
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