A 20m chain used for a survey was found to be 20.10 m at the beginning and 20.30 m at the end of work, The area of plate drawn to a scale of 10cm : 8...
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A 20m chain used for a survey was found to
be 20.10 m at the beginning and 20.30 m at
the end of work, The area of
plate
drawn
to a scale of 10cm : 8 m was measured with a
planimeter was found to be 32.56 sq.cm. the
true area of field in sq. m is
(4) 21.256
(b) 20.427
(c) 21.046
(d) None

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