SOLUTION: A rectangular swimming pool is 11,5m long and 5m wide. how many metres of fencing are needed to enclose the pool if you erect the fencing 2m from the edge. show calculations

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Question 882646: A rectangular swimming pool is 11,5m long and 5m wide. how many metres of fencing are needed to enclose the pool if you erect the fencing 2m from the edge. show calculations
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Each of the two dimensions increases by
2m on one end and 2m on the other end, so
+L+=+2+%2B+11.5+%2B+2+ and
+W+=+2+%2B+5+%2B+2+
----------------------
+L+=+15.5+
+W+=+9+
-----------------
The formula for perimeter i9s:
+P+=+2L+%2B+2W+
+P+=+2%2A15.5+%2B+2%2A9+
+P+=+31+%2B+18+
+P+=+49+
49 m of fencing are needed