Absolute error in the
measurements
8.4 = $\frac{0.1}{2}$ = 0.05
10.5 = $\frac{0.1}{2}$ = 0.05
15.3 = $\frac{0.1}{2}$ = 0.05
Actual perimeter
= 8.4 + 10.5 + 15.3
= 34.2 cm
Maximum perimeter
= 8.4 + 10.55 + 15.35
= 34.35 cm
minimum perimeter
= 8.35 + 10.45 + 15.25
= 34.05
Absolute error in perimeters
[Max Perimeter - Minimum Perimeter] +
$\frac{Actual\;Perimeter - Minimum\;Perimeter}{2}$
= $\frac{[34.35 \;- \;34.2][34.2 - 34.05]}{2}$
= $\frac{0.15\;+\;0.15}{2}$ = 0.15
% error in the perimeter
$\frac{0.15}{34.2}$ x 100 = 0.44%
johnmulu answered the question on March 7, 2017 at 13:57
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