Mid-ocean ridges are places where tectonic plates are doing what?

ANSWER:

Mid ocean ridges are places where "tectonic plates meet at divergent boundaries". These are areas of the oceans where underwater mountain ranges formed because of tectonic plates exist.

EXPLANATION:

The "mid ocean ridges" of the various oceans connect and form the mid oceanic range system which is considered to be the "longest mountain range" of the world with a length of 60,000 kilometers. The mountain ranges are formed when the ocean floors get uplifted because of the convection currents. This in turn leads to the tectonic plates meeting at divergent boundaries.

I'm pretty sure there's a geometry rule for   anyways, if the triangle is equilateral, and the circle is circumscribed, the circle is outside of the triangle.  to find the area, you need the radius.  the radius should be a straight line from the center of the triangle to any of it's points.  draw lines from the center of the circle to each of the triangle points.  draw three more lines from the center to the middle of the sides of the triangle.  you should now have six separate 30-60-90 triangles inside of your original triangle. use your 30-60-90 rules to solve for the radius, then the circumference.