Which is equal to $\sqrt{144}$?
12
122
$\sqrt{12}$
72
Answer (1)
Calculate the square root of 144: 144 = 12 .
Compare the result with the given options.
Select the option that matches the calculated value.
The answer is 12 .
Explanation
Understanding the problem We are asked to find the value of 144 among the given options.
Understanding Square Roots The square root of a number x is a value that, when multiplied by itself, equals x . In other words, if y = x , then y × y = x . In our case, we want to find a number that, when multiplied by itself, equals 144.
Calculating the Square Root We know that 12 × 12 = 144 . Therefore, 144 = 12 .
Comparing with Options Comparing the result with the given options, we see that 12 is one of the options.
Final Answer Therefore, the correct answer is 12.
Examples
Understanding square roots is essential in various fields, such as engineering, physics, and computer science. For example, when calculating the length of the diagonal of a square with side length s , we use the Pythagorean theorem, which involves square roots: d = s 2 + s 2 = 2 s 2 = s 2 . Square roots are also used in calculating distances, areas, and volumes in geometry and physics.
