A farmer needs to build a goat pen. The pen will be 10 yards wide and 19 yards long. The fencing material costs $0.57 per yard. How much will it cost to buy enough fencing material to build the goat pen?

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