Find the length of the longest rod that -Maths 9th

Find the length of the longest rod that -Maths 9th
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Answer :

Length of the longest rod  =  Diagonal of the room = root under( √a2 + b2 + c2)     = root under( √122 + 92 + 82) = root under( √144 + 81 + 64)  = √289   =17 m
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Description : A cylindrical roller 2.5 m in length, 1.75 m in radius when rolled on a road was found to cover the area of 5500 m2. -Maths 9th

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