Answer: circumference to diameter
Explanation:
I believe it is number 3.
Hope this helps!
<h2>Answer:</h2>
Family of Synthetic Elements
<h2>Explanation:</h2>
In chemical Sciences a synthetic element is a chemical element that does not occur naturally on Earth, and it can only be created artificially in the laboratory. So far, 24 synthetic elements have been created in the laboratory and their atomic numbers lie from 95–118.
