The diameter of a sphere is 42 cm. It is melted and drawn into a cylindrical wire of diameter 2.8cm then find the length of the wire answer usGiven diameterofasphere=42cm
radius=
2
42

=21cm
Now,
Volumeofsphere=
3
4

πr
3

=
3
4

×
7
22

×21×21×21
=4×22×21×21
=3,8808cm
3

Volumeofsphere=volumeofcylinder38,808=πr
2
h
⇒38808=
7
22

×14×14×h
h=
11
696

h=63
Hence, lengthofwireis63cm.

The awnser is 7.35

Explanation:

I am sorry if it is wrong

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the decreasing neutrality of the u. s. in world war i

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