Question

the diameter of sphere is 42cm it is melted and drawn into cylindrical wire of 28cm diameter find the length of wire​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

Volume of sphere = Volume of cylindrical wire.

=)Let length of wire be 'h'.

\frac{4}{3} \pi {r}^{3}  = \pi {r}^{2} h

=)

h =  \frac{4\pi {r}^{3} }{3\pi {r}^{2} }  

Radius of sphere =21 cm

Radius of wire =1.4 cm

h =  \frac{4 \times 21 \times 21  \times 21 \times 10 \times 10}{3 \times 14 \times 14}  

h = 63 \times 10 \times 10

h = 6300 {cm}

or \: h = 63 \: m

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Step-by-step explanation: