The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking of 13 fl oz per minute. How fast was the pipe leaking in gallons per hour?

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