SOLUTION: A semicircular window of a radius 14 inches is o be laminated with a sunblock coating that costs $.70 per square inch to apply. What is the total cost of coating the window to the

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Question 296007: A semicircular window of a radius 14 inches is o be laminated with a sunblock coating that costs $.70 per square inch to apply. What is the total cost of coating the window to the nearest cent?
Please show your work. Thanks.
Found 2 solutions by richwmiller, checkley77:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
area=pi*r^2
We want half of that.
then multiply by.70

Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
AREA=PIr2
AREA=3.14*14^2
AREA=3.14*196
AREA=615.44 IN^2 FOR THE CIRCLE.
615.44/2=307.72 IS THE AREA FOR THE SEMI CIRCLE.
307.72*.70=%215.40 IC THE COST OF COATING.