Question

8. The radius of a wire is decreased to
one-third. If the volume is same, then find
the length of the wire ​

Answer 1

Answer:

Wire is in the shape of a cylinder.

Let the radius of the original cylinder =r cm and height =h cm

Original volume =πr

2

h

New Radius after decrease =

3

r

Let the new height be H.

Given, πr

2

h=π(

3

r

)

2

H

H=9h

Hence, the height becomes 9 times.

Step-by-step explanation:

marker brainlist and follow me