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Byju's Answer
Standard VIII
Mathematics
Total Surface Area of a Cuboid
Find the leng...
Question
Find the length of the longest rod that can be placed in a room
12
metres long,
9
metres broad and
8
metres high.
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Solution
The length of the longest rod
=
length of the diagonal
=
√
12
2
+
9
2
+
8
2
=
√
144
+
81
+
64
=
√
289
=
17
m
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