15. Find the surface area of the cylinder to the nearest tenth of a square unit. Use 3.14 for 7i. 18.2 cm O 228 cm2 399.4 cm2 165.7 cm 371.1 cm​

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