Can someone write the equation that goes with this table? ()

What is the range of the data below? .8090100

Negative 5 1/12 + negative 4 1/4 + 6 3/4

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