Question

An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:

A) 1.04 B) 2.04 C) 3.04 D) 4.04

Answer 1

Answsr is 4.04 %.

Let the new side be of 100 units , then its will be 10,000 square units .

Now , error measure of side = 102 units

Now , area of square created by error side will be 102 × 102 = 10,404 square units .

Now , percentage of error = { ( 10,404 - 10,000 ) / 10,000 } × 100

=> 404 / 100 = 4.04 %

Hence , percentage error = 4.04 %

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