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Question
The weight of a 20 mm diameter bar per metre length is approximately
20 mm O;kl okyh NM dk izfr ehVj yECkkbZ dk Hkkj yxHkx gSA 
A.
2.47 kg
B.
2.98 kg
C.
3.85 kg
D.
1.58 kg
Answer ( Option A)

2.47 kg

Solution

Density of steel = 7850 kg/m3
weight of 20 mm diameter bar per meter length 
      = density × Volume  
     

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