Answer:
Ross's percentage error is 1.69%.
Explanation:
\sf{Percentage~ error= \fracActual}
Ross got the approximate area as 12, while the actual area was 11.8. So, let's plug it in to the formula.
\sf{Percentage~ error= \fracActual= \frac12-11.8= \frac11.8= \frac{0.2}{11.8} \approx 0.0169 }
Multiply 0.0169 by 100 to make it into a percent.
0.0169 * 100 = 1.69%
Ross's percentage error is 1.69%.
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