Of the campers in a campground, 1/3 are sleeping in tents. Of the campers who are sleeping in tents, 1/8 do not use a pillow. If there are 192 campers in the campground, how many are sleeping in tents without a pillow?

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