Arithmetic Aptitudes › Area › Question #5297
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QThe percentage of error in the calculated area of the square, given that an error of 2% in excess was made while measuring the side, is:

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#5297Q ID
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AreaTopic
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  • A 2% ✔ ✖
  • B 2.02% ✔ ✖
  • C 4% ✔ ✖
  • D 4.04% ✔ ✖
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Explanation

The percentage error in the calculated area of the square is 4.04%.
This is calculated by taking the difference between the actual area and the measured area, and then expressing it as a percentage of the actual area.
In this case, the actual area is 100cm x 100cm = 10000 cm2 and the measured area is 102cm x 102cm = 10404 cm2
The difference (10404 - 10000) = 404 cm2 which is 4.04% of the actual area.

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