railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Mensuration Solid Figures

The radius of the cross-section of a solid cylindrical rod of iron is 75 cm. The cylinder is melted down and formed into 9 solid spherical balls of the same radius as that of the cylinder. The length of the rod (in metres) is:

1
9
2
4.5
3
3
4
6
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