Which term describes a fracture in the earth's crust at which land on each side has moved up, down, or sideways compared to the other? a. joint b. fault c. split d. hinge

The term 'fault' is used to describe a "fracture in the earth's crust" at which land on each side has moved up, down, or sideways compared to the other.

Explanation:

A fault is said to have occurred when there's a "fracture in the earth's crust" resulting in the displacement of the crust beds. Faults mainly occur due to "tensional or compressional forces" acting on the earth's crust. Depending on the nature of displacement, faults can be classified into four different types, viz. normal fault, reverse fault, strike-slip fault and oblique fault.

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.