Question

A student makes measurements to calculate the density of a rod of aluminum to be

3.26 g/cm3. If the actual density of the aluminum rod is 2.70 g/cm3, what is the
percent error?
15.5%
5.93%
94.41%
20.7%

Answer 1

20.7%

Step-by-step explanation:

Percentage error = (difference in measurement ÷ real measurement) x 100%

= (3.26 - 2.70)/2.70 x 100%

= 0.56/2.7 x 100%

= 0.2074 x 100% = 20.74%