Calculate the square root of 225

Problem

√(,225)

Solution

1. Identify the number under the radical, which is 225

2. Determine if 225 is a perfect square by checking integers whose square ends in 5

3. Test the integer 15 by multiplying it by itself.

4. Calculate the product 15×15

15×15=225

5. Conclude that the principal square root of 225 is 15

Final Answer

√(,225)=15

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