A automated car Wash can watch 30 cars in 2 hours how long would it take it to wash 90 cars
1 answer:
You might be interested in
first polygon
ext. angle=180°-120°
=60°
n=360°/60°
n=6
second polygon
n=2(6)=12
ext. ang= 360°/n = 360°/12° = 30°
int. ang = 180°-30°= 150°
answer is C