Question

the length and breadth of a rectangular field are measured as(25.2m +- 0.5m) and (18.6m +-0.8m) respectively. Find the area of rectangular field within the limits of errors and also find percentage error in area

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Answer 1

Explanation:

️A/A =️l/l +️b/b

=0.5/25.2 +0.8/18.6

=0.02 +0.04

=0.06

percentage error in area=0.06 ×100

=6%

Area =25.2×18.6

=468.72

=469 (significant upto 3 digits)