9514 1404 393
Answer:
15
Step-by-step explanation:
Your calculator can tell you √230 ≈ 15.17. The closest integer is 15.
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If you have memorized the squares of small integers, you know that 15² = 225 and 16² = 256. 230 is closer to 225 than to 256, so √230 will be closer to 15.
