3. Jim plotted the following ordered pairs on a coordinate grid. (1,3) (3,6) (7,6) (9,3)
O
(4,5)
9
O
(8,6)
8
7
O
(5,7)
6
5
4
O
(3,1)
3
CLEAR ALL
2
1
0 1 2 3 4 5 6 7 8 9
Jim connected the points with line segments to form a polygon. Which point is
located inside the polygon?

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units