People of earth lead me to your energy

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2