
Concept explainers
To calculate the accuracy you should maintain in measure the side of the square.

Answer to Problem 45E
You should measure x with an error dx that is no more than 1% of the true value.
Explanation of Solution
Given information:
Be sure of calculating the area to within 2% of its true value.
Calculation :
Consider the side of the square be x .
You want any accuracy in your measurement to be small enough to make the corresponding increment
Replace
This gives
You should measure x with an error dx that is no more than 1% of the true value.
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