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  1. The length of a rectangle is increased by 10% and breadth decreased by 10%. The area of the new rectangle is
    1. neither increased nor decreased
    2. increased by 1%
    3. decreased by 2%
    4. decreased by 1%
Correct Option: D

Using Rule 10,

Change in area =
-10 × 10
= - 1 %
100

% Negative sign shows decrease.



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