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If (a^3=216) then what is (a)?
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Answer and explanation
Correct answer: 6
Given \(a^3=216\), taking the cube root of both sides gives \(a=\sqrt[3]{216}=6\), because \(6^3=6\times6\times6=216\). Option 5 is not correct because \(5^3=125\), not 216. Exam tip: To check a cube, multiply the number by itself three times.
Frequently asked questions
What is the correct answer to this question?
6
Why is this the correct answer?
Given \(a^3=216\), taking the cube root of both sides gives \(a=\sqrt[3]{216}=6\), because \(6^3=6\times6\times6=216\). Option 5 is not correct because \(5^3=125\), not 216. Exam tip: To check a cube, multiply the number by itself three times.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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