CXC CSEC Mathematics Maths Practice Test

What is the square root of 64?

6 8 10 12

Correct Answer:

Explanation:

The square root of a number is defined as a value that, when multiplied by itself, gives the original number. In this case, we are looking for a number that, when squared, equals 64. When you multiply 8 by itself (8 × 8), the result is 64. This confirms that 8 is indeed the square root of 64. Therefore, the correct answer is 8. To elaborate, squaring the other numbers listed yields these results: 6 squared equals 36, 10 squared equals 100, and 12 squared equals 144, none of which equal 64. Thus, the only viable candidate that satisfies the condition of the square root for this specific problem is 8.

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