Explanation:
To see which one is the closest approximation we can check their squares:
• 5² = 25
,
• 11² = 121
,
• 12² = 144
,
• 62²...well this one will be a big number, and it will be bigger than 144 so we don't need to find this square.
We can see that 11² is 3 units less than 124 and 12² is 20 units greater. Therefore, the closest number is 11.
Answer:
B. 11
