Solve the Problem $140 ^ { \circ }$ ?
A) $\frac { 28 \pi } { 3 } \mathrm {~m}$

Multiple Choice

Solve the problem.
-On a circle of radius 12 meters, how long is an arc that subtends a central angle of $140 ^ { \circ }$ ?

A) $\frac { 28 \pi } { 3 } \mathrm {~m}$
B) $1680 \pi \mathrm { m }$
C) $\frac { 28 } { 3 } \mathrm {~m}$
D) $1680 \mathrm {~m}$