document.write( "Question 152031: A triangular window of height 15 inches and base 21 inches is to be laminated with a sunblock coating that costs $1.22 per square inch to apply. What is the total cost of coating the window, to the nearest cent? (Hint: Area of Triangle: A = base*height/2 \n" ); document.write( "
Algebra.Com's Answer #111739 by nerdybill(7384)\"\" \"About 
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Use the hint...
\n" ); document.write( "A = base*height/2
\n" ); document.write( ".
\n" ); document.write( "The problem gave the following information:
\n" ); document.write( "height = 15 inches
\n" ); document.write( "base = 21 inches
\n" ); document.write( ".
\n" ); document.write( "Calculate the area of the triangle by substituting in what we know into:
\n" ); document.write( "A = base*height/2
\n" ); document.write( "A = 21*15/2
\n" ); document.write( "A = 21*15/2
\n" ); document.write( "A = 157.5 square inches
\n" ); document.write( ".
\n" ); document.write( "Since the coating costs $1.22 per square inch, multiply that with the area:
\n" ); document.write( "157.5 * 1.22 = $192.15
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