A) 1166.4 metre
B) 1458 metre
C) 777.6 metre
D) 972 metre
Correct Answer: D
Solution :
Volume of solid sphere \[=\frac{4}{3}\pi {{r}^{3}}=\frac{4}{3}\pi \times 9\times 9\times 9\] \[=972\,\pi \]cubic cm. If the length of wire be h cm then Volume of wire \[=972\pi \] \[\Rightarrow \]\[\pi {{\left( \frac{1}{10} \right)}^{2}}h=972\pi \] \[\Rightarrow \]\[h=97200\,cm.=972\]metre
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