Question

The radius of a wire is decreased to one- third. If volume remains the same, the length will become * 1 point (a) 3 times (b) 6 times (c) 9 times (d) 27 times​

Answer 1

Answer:

Answer

(D) answer

answer

answer

answer

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Answer 2

Step-by-step explanation:

Wire is in the shape of a cylinder.

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

Original volume =πr²h

New Radius after decrease = r/3

Let the new height be H.

Given, πr² h=π( r/3) ²H

H=9h

Hence, the height becomes 9 times.

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