Answer:
B
Step-by-step explanation:
Because m is 58 degrees, and it is on a 180 degree plane, we can subtract 58 from 180 to get 122
Wheres the plot?
bbbbbbbbbbbbbbbbbbbbbbb
153m
perimeter of an arc = theta/360 × 2πr
P= 17πm
theta = 20°
17πm= 20/360 × 2 × π × r
153πm = πr
r = 153m