document.write( "Question 1026970: A builder Needs to lay a concrete path around the outside of an 18m by 15m rectangular area of grass.if the width of the path must be 1m and the concrete must have a depth of 10cm, calculate the amount of the concrete needed by the builder correct to one decimal. \n" ); document.write( "

Algebra.Com's Answer #642251 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "A builder Needs to lay a concrete path around the outside of an 18m by 15m rectangular area of grass.if the width of the path must be 1m and the concrete must have a depth of 10cm, calculate the amount of the concrete needed by the builder correct to one decimal.
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document.write( "1. The area  S = (18+2)*(15+2) - 18*15 = 70 .\r\n" );
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document.write( "2. The volume V = S*d = 70*0.1 = 7 .\r\n" );
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