is between what two numbers?
We write down, or just think through, the list of squares
and their square roots:
1² = 1, therefore
= 1
2² = 4, therefore
= 2
3² = 9, therefore
= 3
4² = 16, therefore
= 4
5² = 25, therefore
= 5
6² = 36, therefore
= 6
7² = 49, therefore
= 7
8² = 64, therefore
= 8
9² = 81, therefore
= 9
10² = 100, therefore
= 10
That's far enough. We know from that list that
is between
which is 9 and
which is 10.
Therefore the answer is C).
Edwin