document.write( "Question 198670: 1. A semicircular window of radius 12 inches is to be laminated with a sunblock coating that costs $0.75 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Use п = 3.14. Hint: Area of Circle: A = пrē) \n" ); document.write( "
Algebra.Com's Answer #149180 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
A semicircular window of radius 12 inches is to be laminated with a sunblock coating that costs $0.75 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Use п = 3.14. Hint: Area of Circle: A = пrē)
\n" ); document.write( ".
\n" ); document.write( "Area of a circle given r = 12:
\n" ); document.write( "(pi)r^2
\n" ); document.write( "=(3.14)(12^2)
\n" ); document.write( "=(3.14)(144)
\n" ); document.write( "=452.16 sq inches
\n" ); document.write( ".
\n" ); document.write( "Since the window is semicircular take 1/2 of above:
\n" ); document.write( "(1/2)452.16
\n" ); document.write( "=226.08 sq inches
\n" ); document.write( ".
\n" ); document.write( "Cost = .75(226.08) = $169.56 \n" ); document.write( "
\n" );