When fashion magazines face competition from fashion blogs on the web, which of the following forces in michael porter's five forces model primarily gets stronger? a. the emergence of entry barriers b. the bargaining power of suppliers c. the availability of complements d. the threat of substitutes e. internal rivalry

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. 

South wales composes a lot of coal in that region.

The study of where things are 

Answer steam fog;