1. A circle has a center at (3,5). The point (3,8) is on the circle. What is the circumference of the to the nearest tenth of a unit?

A. 9.4 units
B. 18.8 units
C. 28.3 units
D. 56.5 units

2. A triangle has a perimeter of exactly 24 units. Which of the following could be the vertices of the triangle?

A. (-1 ,3 ), (2,-1), (-1,-1)
B. (6,0), (6,7), (0,7)
C. (-1,-1), (-6,-13), (-9,-9)
D.(-3,-4) (-3,4), (3,4)

3. A circle has an area of approximately 78.5 square units. If the center of the circle is at (2,4). Which of the following points is on the circle?

A. (-6,4)
B. (2,-1)
C.(-4,-4)
D. (2,-9)

4. The end point of a diameter of a circle are A (2,1) and B (5,5). Find the area of the circle in terms of pi.

A. 25/4 pi square units
B. 10 pi square units
C 25 pi square units
D. 5 pi units