In the episode pertaining to the discovery of radium, all of the hypotheses turned

In the episode pertaining to the discovery of radium, it is false that all of the hypotheses turned out to be true.

There are some hypotheses in the episode thay turned out to be false.

Step-by-step explanation:

One way to do this would be to find the circumference of the entire circle and divide it by 4, considering that the arc measure is 90 degrees

The radius is 1, and the circumference can be found by taking

So, the circumference of this circle is

Now, all we have to do is divide that by four to get our answer