document.write( "Question 4665: Suppose that a gallon of wall paint costs $16 and covers 350 square feet. Three rooms of the house measure 9ft by 12 ft, 14ft by 16ft, and 12ft by 14 ft. The ceiling is 9ft high.\r
\n" ); document.write( "\n" ); document.write( "How many gallons of paint are needed to cover the walls of these rooms if you make no allowance for the doors and windows? Remember that you can't buy a part of a gallon. So always round your answers up to the next gallon. \n" ); document.write( "

Algebra.Com's Answer #2297 by Abbey(339) $\"\"$ $\"About$

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Area is found by multiplying height by width:
\n" ); document.write( "Two walls are 9' high x 9' wide and two walls are 9'high x 12' wide\r
\n" ); document.write( "\n" ); document.write( "(2*9*9) + (2*9*12) = 162+216 = 378 square feet
\n" ); document.write( "Room 2
\n" ); document.write( "Same process\r
\n" ); document.write( "\n" ); document.write( "Walls: (2*9*14)+(2*9*16) = 540 sq. feet
\n" ); document.write( "Room 3\r
\n" ); document.write( "\n" ); document.write( "walls: (2*9*12)+(2*9*14) = 468 square feet
\n" ); document.write( "Total for house = 468+540+378 = 1386 square feet\r
\n" ); document.write( "\n" ); document.write( "Divide by 350 square feet (the amount covered by each gallon)=3.96
\n" ); document.write( "Round up to 4 gallons\r
\n" ); document.write( "\n" ); document.write( "TOTAL
\n" ); document.write( "$16 (the cost of paint) *4 = $64. \n" ); document.write( "

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