SOLUTION: here's my question: 1. A semicircular window of radius 15 inches is to be laminated with a sunblock coating that costs $0.85 per square inch to apply. What is the total cost of

Algebra ->  Surface-area -> SOLUTION: here's my question: 1. A semicircular window of radius 15 inches is to be laminated with a sunblock coating that costs $0.85 per square inch to apply. What is the total cost of       Log On


   



Question 154482: here's my question:
1. A semicircular window of radius 15 inches is to be laminated with a sunblock coating that costs $0.85 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Use p = 3.14. Hint: Area of Circle: A = prē)
I need help, thanks.

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
area=pi*r^2/2=3.14*15^2/2=3.14*225/2=706.5/2=353.25 in^2 Is the area to be covered.
353.25*.85=$300.26 cost of coating.