Answer:
Volume of sphere
[tex] = \frac{4}{3} \pi \: r ^{3} [/tex]
[tex] = \frac{4}{3} \times \frac{22}{7} \times {(21)}^{3} [/tex]
[tex] = 38808 \: cm^{3} [/tex]
Volume of cylindrical wire = Volume of sphere
[tex]\pi r^{2} h = \frac{4}{3} \pi \: r ^{3} [/tex]
[tex] \frac{22}{7} \times {(1.4)}^{2} h = 38808[/tex]
[tex]6.16h = 38808[/tex]
[tex]h = 6300 \: cm[/tex]
Length of wire = 6300 cm
