The length and breath of a rectangular object
are 25 cm and 10cm respectively and were
measured to an accuracy of 0.1 cm. The
percentage error in area is
1) 2.8 % 2) 0.5% 3) 1.4% 4) 3%
Answers
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Explanation:
Area=l×b
A
△A
=
l
△l
+
b
△b
=(
25.2
0.1
+
16.8
0.1
)=0.00992≈0.01
This is the relative error.
Percentage error =0.01×100=1%
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