document.write( "Question 163989: 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 = pr²) \n" ); document.write( "

Algebra.Com's Answer #120816 by nerdybill(7384) $\"\"$ $\"About$

You can put this solution on YOUR website!
Since it is a SEMI circle the area is: (half a circle)
\n" ); document.write( " $\"%28pi%29r%5E2%2F2\"$
\n" ); document.write( "plugging in our values
\n" ); document.write( " $\"%283.14%2915%5E2%2F2\"$
\n" ); document.write( " $\"%283.14%29225%2F2\"$
\n" ); document.write( " $\"706.5%2F2\"$
\n" ); document.write( " $\"353.25\"$ square inches (area of semicircle window)
\n" ); document.write( ".
\n" ); document.write( "Now, we multiply the area (above) by cost per inch:
\n" ); document.write( " $\"353.25+%2A+0.85\"$
\n" ); document.write( " $\"300.26\"$
\n" ); document.write( "That's $300.26 for the coating.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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