Excel: Find Area by Perimeter (House Slab)

Good morning all, I have had a troll through the search bar but cant find anything to suit my needs. I have this data in excel which is the perimeter details of a house slab (starting and finishing at 0,0) Which gives me a total perimeter of 77.76 meters using {=SUM(ABS(B4:B25))} as a formula. 6.020 -6.090 -2.200 -2.860 0.840 -1.300 -0.840 -4.240 -8.510 3.870 -3.500 2.900 -5.570 0.510 -3.770 7.210 17.530 The question is can I also get an area from these figures? Thanks heaps.

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This thread is current as of August 13, 2015.

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