The longest road which can fit into the box will have one end at A and
other end at G (or any other similar diagonal)
Hence the length of the longest rod = AG
‡’
AC =
8000
cm
Initially let's find out AC. Consider the right angled triangle ABC
AG2 = AC2 + CG2
=
8000
2
+
60
2
=
8000
+
3600
=
11600
⇒
AG =
11600
cm
⇒
The length of the longest rod =
11600
cm
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