No, but three over eight is.
tree
1.1429
Oh, isn't that a lovely number, 7.885? It sure is a rational number because it can be expressed as a fraction where the numerator and denominator are both integers. Just like painting a happy little tree, rational numbers can be expressed neatly and precisely.
68 /\ 2 34 /\ 2 17
In rational form, 3.75 can be expressed as (\frac{15}{4}). This is because 3.75 is equivalent to 3 (\frac{3}{4}) when written as a mixed number. Converting the mixed number to an improper fraction gives (\frac{15}{4}), which is the rational form of 3.75.
Well, isn't that a happy little question! No, 2.236068 is not a rational number. It is actually an irrational number because it cannot be expressed as a simple fraction of two integers. Just like every tree and cloud in nature, numbers come in all different shapes and sizes, and that's what makes them so special.
A number tree is a tree with numbers on it
Mangrove
The prime factorization of the number at the top
Quite a number of baobabs in Africa have been dated to over 1,000 years
If you are looking at willow tree nativity, you have a fair number of options. I would suggest that you start your investigation over at willowtree.info/products/nativity
Here is a factor tree of eight: 8 / \ 4 2 / \ 2 2