Answer :

Given, a parallelogram land,


Consider a parallelogram ABCD, adjacent sides are given, AB=13m


BC=15m


And diagonal AC=14m


Semi perimeter of ∆ABC, S =


S= 21m


Hence area of ∆ABC = sq. m


Area ∆ABC = 84 sq. m


Area of parallelogram ABCD = 2×area of ∆ABC


Area of parallelogram ABCD = 2×84


= 168 sq. m


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