Find the cube root of 0.000216.
Aptitude
Square Root and Cube Root
Difficulty: Easy
Choose an option
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A0.6
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B0.06
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C0.016
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D0.26
Answer
Correct Answer: 0.06
Explanation
Problem restatementEvaluate √√√(0.000216).
Concept/ApproachUse the property √√√(a × 10k) = √√√(a) × 10k/3. Recognize 0.000216 = 216 × 10−6.
Step-by-step calculation√√√(0.000216) = √√√(216) × √√√(10−6)= 6 × 10−2 = 0.06
Verification/Alternative(0.06)3 = 0.000216, confirming the result.
Common pitfallsTaking cube root of the exponent incorrectly (e.g., using 10−3 instead of 10−2).
Final Answer0.06