FInd the lenght of the longest rod that can be placed in a room 12m long, 9m broad and 8m high.
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find the diagonal of rod
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= √( l²+b²+h²)
=√(12² + 9² + 8² )
=√( 144+81+64)
=√(289)
=17
Hence, longest rod that can be placed in a room of dimensions 12m x 9m x 8m is 17 m
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