## anonymous 5 years ago A semicircular window of radius 12 inches is to be laminated with a sunblock coating that costs $0.80 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 = p r² • This Question is Closed 1. anonymous Okay, we have the following as given: We have a semicircle with R = 12 in so: $A = 1/2 \pi r^2 = 72\pi$ Now the other half of the circle also has the same Radius = 12 in so it'll have the same area, $A = 1/2 \pi r^2 = 72\pi$ and so If 72 pi of the circle ---> costs 0.80 then 72 pi + 72 pi (full circle) ----> x cross multiply and you'll get: x = 1.6$ It'll cost 1.6 $for total coating ^_^ correct me if I'm wrong 2. anonymous A.)$180.86 B.) $361.73 C.)$60.29 D.) \$1,808.60

3. anonymous

lol, I got none, so I guess I'm wrong ^^"

4. anonymous

That's okay.. I have another for ya if you wanna try

5. anonymous

sure ^_^