Concept:Area error is found by comparing calculated area with the actual area using assumed base values for the sides.Explanation:Let the actual length and breadth each be 100 units.The measured length is 5% excess, so it becomes 105 units.The measured breadth is 6% deficit, so it becomes 94 units.Actual area =100×100=10000 sq units.Calculated area =105×94=9870 sq units.Error in area =10000−9870=130 sq units.Error percent =10000130​×100=1.3%.Answer:1.3%, i.e., Option A.