Calculate the theoretical weight of a steel bar of length 8 m and diameter 20 mm. Take density of steel as 7850 kg/m3

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SSC JE (Civil) 2023 Official Paper-II (Held On: 04 Dec, 2023 Shift 1)
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  1. 19.72 kg
  2. 15.58 kg
  3. 17.77 kg
  4. 12.56 kg

Answer (Detailed Solution Below)

Option 1 : 19.72 kg
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Concept:

The weight of steel bar is calculated by the formula given below

where, d = diameter of rod, L = length of rod,  density of steel.

Calculations:

Given: d = 20 mm = 0.02 m, L = 8m, 

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