9. A rectangular field of dimensions 0.7 km by 0.5 km is to be fenced thrice by wire. Find the length of the wire to be needed
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Step-by-step explanation:
Perimeter of field = 2(700+500)
=2(1200)
=2400m
=2.4km
Length of wire = 3×2.4
= 7.2km
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