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What is the value of (20^2)?
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Answer and explanation
Correct answer: 400
To find the square of a number, multiply it by itself. Thus, \(20^2=20\times20=400\), so 400 is correct. The value 200 is obtained by multiplying 20 by 10, not by squaring it. Exam tip: \(a^2\) always means \(a\times a\).
Frequently asked questions
What is the correct answer to this question?
400
Why is this the correct answer?
To find the square of a number, multiply it by itself. Thus, \(20^2=20\times20=400\), so 400 is correct. The value 200 is obtained by multiplying 20 by 10, not by squaring it. Exam tip: \(a^2\) always means \(a\times a\).
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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