document.write( "Question 1190073:
\n" ); document.write( "5. A triangular playground has its sides measured. They sides are f metres, f + 4 metres and f + 5 metres.
\n" ); document.write( "a) Write an expression for the perimeter of the playground.
\n" ); document.write( "b) The perimeter is 51 metres. Form a suitable equation using this information.
\n" ); document.write( "c) What are the lengths of all three sides of the playground
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Algebra.Com's Answer #821625 by Theo(13342)\"\" \"About 
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p = perimeter.
\n" ); document.write( "p = f + f + 4 + f + 5
\n" ); document.write( "combine like terms to get p = 3f + 9
\n" ); document.write( "when p = 51, the formula becomes 51 = 3f + 9
\n" ); document.write( "subtract 9 from both sides of the equation to get 42 = 3f
\n" ); document.write( "divide both sides of the equation by 3 to get 14 = f.
\n" ); document.write( "the length of the 3 sides are 14, 14 + 4 = 18, 14 + 5 = 19
\n" ); document.write( "their sum is equal to 14 + 18 + 19 = 51.
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