If (d^2=324) then what is the positive value of (d)?
Answer and explanation
Correct answer: 18
Since the square root of 324 is 18, the possible values of d are 18 and -18. As the question asks for the positive value, d = 18 is correct. Option 16 is not correct because 16² = 256, not 324. Exam tip: When the positive value is asked in d² = n, take the positive square root of n.
Frequently asked questions
What is the correct answer to this question?
18
Why is this the correct answer?
Since the square root of 324 is 18, the possible values of d are 18 and -18. As the question asks for the positive value, d = 18 is correct. Option 16 is not correct because 16² = 256, not 324. Exam tip: When the positive value is asked in d² = n, take the positive square root of n.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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