Estimate: √35
I would say 6 since the square root of 36 is 6. It's the closest one out of those options
The answer is 6. I would go through and square each of the answers and see which one is closest to 35. \(4^{2} = 16, 5^{2} = 25, 6^{2} = 36, 7^{2} = 49\). As you can see, 6 is the closest.
