Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 8 (Q.No. 37)
37.
A circle of radius 7 m has a standard error of 0.02 m on the radius. The standard error of its area is
Discussion:
4 comments Page 1 of 1.
Apcivilian said:
3 years ago
Option D is the right answer.
Sadashiva said:
7 years ago
A= πr^2.
dA/dr=2πr,
eA=er*dA/dr,
=. 0.02*2*r,
=. 0.02*2π*7,
=. 0.88 m^2.
So option D is correct.
dA/dr=2πr,
eA=er*dA/dr,
=. 0.02*2*r,
=. 0.02*2π*7,
=. 0.88 m^2.
So option D is correct.
(1)
Diptayandas said:
8 years ago
Ans will be 0.88m^2.
Ea=0.02*2*π*7.
Ea=0.02*2*π*7.
Sourav changdar said:
8 years ago
How to solve this?
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