Find √1.5625.
Aptitude
Square Root and Cube Root
Difficulty: Easy
Choose an option
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A1.25
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B1.245
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C1.24
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D1.30
Answer
Correct Answer: 1.25
Explanation
Problem restatementCompute the principal square root of 1.5625.
Concept/ApproachNote that 1.252 = (5/4)2 = 25/16 = 1.5625.
Step-by-step calculation√1.5625 = √(25/16) = 5/4 = 1.25
Common pitfallsIncorrect decimal squaring; using 1.24 or 1.26 by rough rounding.
Final Answer1.25