While mining, Fred found a large metal bar that contained 12 ounces of lead. Fred also determined that the bar was 50% lead. What was the total weight of the medal bar in ounces?

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