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Physics
Physics
Problem
The radius of a circular plate is measured as
r
=
10.0
cm
r = 10.0\,\text{cm}
r
=
10.0
cm
with an uncertainty of
±
2
%
\pm 2\%
±
2%
. The percentage uncertainty in its area
A
A
A
is a)
6
%
6\%
6%
b)
4
%
4\%
4%
c)
2
%
2\%
2%
d)
3
%
3\%
3%
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