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)
,-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)
,-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