Question

2: A copper sphere of diameter 18 cm is drawn
into a wire of diameter 4 mm. Find the length of
the wire.​

Answer 1

Step-by-step explanation:

Radius= 9

Naphthalene balls sublime slowly. When they are placed in clothes, they sublime without leaving any residue and there role is to ward off any kind of insects which could damage the clothes.

Answer 2

Answer:

${\boxed{ \bold{Diameter \: of \: sphere= \: 18cm}}}$

$\boxed{ \bold{Radius \: of \: sphere= \: \frac{18}{2} =9cm}}$

$\boxed{ \bold{diameter \: of \: wire =4mm}}$

$\boxed{ \bold{Radius \: of \: sphere=2mm = 0.2cm}}$

$\boxed{ \bold{volume \: of \: sphere \: = volume \: of \: wire \: (cylinder)}}$

$\boxed{ \bold{ \frac{4}{3} \pi \: r {}^{3} = \pi \: {r}^{2} h \:}}$

$\boxed{ \bold{ \frac{4}{9} {9}^{3} = 0.2 {}^{2} h}}$

$\boxed{ \bold{h = 24300cm = 243m}}$

Step-by-step explanation:

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