Calculate the Square Root: Solving √225 Step by Step

To solve the problem, we will follow these steps:

• Step 1: Identify the perfect squares near 225.
• Step 2: Calculate to find which integer when squared equals 225.

Now, let's work through the steps:

Step 1: The perfect squares around 225 are $196 = 14^2$, $225 = 15^2$, and $256 = 16^2$.
Step 2: We calculate $15^2 = 15 \times 15 = 225$, therefore, $\sqrt{225} = 15$.

Therefore, the solution to the problem is $\sqrt{225} = 15$.

Accordingly, the correct answer choice is option 2: 15.