Answer:
A
Explanation:
is not a perfect square. This means that you can rule out answers B and D, because it won't be 'exactly' anything.
Let's think about the other answer choices. C says that the answer of \sqrt{50} will be between 24 and 25. This is easily checkable by doing
, which equals 576. This easily eliminates option C.
Now, if the other answer choices weren't so obviously incorrect, let's see how you would solve this. What's the closest perfect square root under 50?
, which equals 7.
What's the closest perfect square root above 50?
, which equals 8.
This puts
between 7 and 8.