The diameter of a metallic sphere is 6 cm. It is melted and drawn into a wire having a diameter of the cross section as 0.4 cm. Find the length of the wire (in metres).
Answer
The correct answer is D: 9. Volume of sphere = 4/3×π×3³. Volume of wire = π×0.2²×h.
A.12
B.18
C.10
D.9✓ Correct
Explanation
Volume of sphere = 4/3×π×3³. Volume of wire = π×0.2²×h. Setting equal: h = (4/3×27)/0.04 = 900 cm = 9 metres.
💡 Practice unlimited SSC MTS PYQs + AI-tracked progress on each topic. Sign up free →