alex measured the lenth of an iteam to be 3.9 cm. the actual length is 3.5 cm what is alex percent error

11.43%

Explanation:

The above question will be calculated using:

Percent error = (Estimated value-Actual value) / Actual value × 100

where,

Estimated value = 3.9cm

Actual value = 3.5cm

Percentage error= (3.9 - 3.5) / 3.5 × 100

= (0.4 / 3.5) × 100

=11.43%

Alex percent error is 11.43%.

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