Help me with special Angles in a circle..GEOMETRY

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

When the ball has traveled a distance of

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?