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What is the correct answer?
4
A rectangular plot measuring 90 metres is to be encloseed by wire fencing. If the poles of the fence are kept 5 metres apart, how many poles will be needed?
A.
55 m
B.
56 m
C.
57 m
D.
58 m
Correct Answer :
B. 56 m
P
e
r
i
m
e
t
e
r
o
f
t
h
e
p
l
o
t
=
2
90
+
50
=
280
m
∴
N
u
m
b
e
r
o
f
p
o
l
e
s
=
280
5
=
56
m
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