Question

Where is the red dot located

Answer 1

Answer:

B. $\sqrt{18}$

Step-by-step explanation:

While we don't know exactly where it is, we know that it's not A, as $\sqrt{10} < 4$.

We know it's not D, because $\sqrt{12} < 4$

We're left with B and C. We know that $\sqrt{24} > \sqrt{20.25} = 4.5$ so it's not C either.

B is the only sensible answer.