<span>El Nino
</span>A change in the water temperature of the eastern Pacific Ocean that produces cooler than usual surface water temperatures. An unusually long period during which rainfall is below average. Used by NOAA to collect data to predict an El Nino<span>.</span>
It will be something like b or d
The circumference of circle is 20.096 units
<em><u>Solution:</u></em>
Given that circle has a diameter with endpoints at (10, 8) and (5, 4)
To get the diameter, find the distance between the end points
<em><u>The distance between two points is given by formula;</u></em>

Here the points are (10, 8) and (5, 4)

Substituting the values we get,


Thus the diameter is 6.4 units
<em><u>The circumference of the circle is given by formula:</u></em>

Where "d" is the diameter of circle

Thus circumference of circle is 20.096 units
Salutations!
What is The largest European city which is not actually the capital of a country?
The largest European city which is not actually the capital of a country is Zurich. Zurich is a city located in Switzerland, which is a country is Europe. Zurich's population is larger than Bern, which is the capital city of Switzerland.
Hope I helped :D