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Find to 4 significant figures the percentage error in the area of the rectangle.

      

The length and width of a rectangle measured to the nearest millimeter are 7.8 cm and 4.7 cm respectively.
Find to 4 significant figures the percentage error in the area of the rectangle.

  

Answers


Raphael
Max = 7.85 x 4.75 = 37.2875

Min = 7.75 x 4.65 = 36.0375

Actual = 7.8 x 4.6

Absolute error = $\frac{37.2875 - 36.0375}{2}$

= 0.625

Percentage error = $\frac{0.625}{35.88} \times 100$

= 1.758%
raphael answered the question on January 14, 2017 at 06:55


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