Answer:
Step-by-step explanation:
C=2*3.14*r
we have the diameter d=2*r=8.3m
C=8.3*3.14=26.06 m
20 hours times $9 is $180. She would have to work over 20 hours to earn more than $180.
I would say 21 hours.
Answer:
Step-by-step explanation:
Alright, lets get started.
Please refer the diagram I have attached.
Suppose the base of right triangle sail is b
Suppose the height of right triangle sail is h
It is given that, it is three times higher as it is wide.

Area of right triangle is A = 

Plugging the value of h in terms of b



Hence height h = 
Hecne the height of sail is 6 meters. : Answer
Hope it will help :)