Question

the thickness of hollow metallic cylinder is 1cm .It is 20 metre long and it's inner radius is 11cm . Find the value of metal required to make the cylinder.



give me answer step by step and also give me only right answer​

Answer 1

Answer:

hlo kese ho

Step-by-step explanation:

The Ward Councillors are elected members. ... While the Councillor's Committees and the councillors decide on issues, the Commissioner and the administrative staff implement these decisions. All of the Ward Councillors meet and they make a budget and the money is spent according to this.

Answer 2

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The thickness of hollow metallic cylinder is 1cm .It is 20 metre long and it's inner radius is 11cm . Find the value of metal required to make the cylinder.

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Height (h) = 20 m = 2000 cm

Inner radius (r) = 11 cm

Thickness = 1 cm

Outer radius (R) = 12 cm

Volume of metal required = πh(R²-r²)

Volume = 22/7×2000(12²-11²)

Volume = 22/7×2000(144-121)

Volume = 22/7×2000×23

Volume = 144571.429 cm³ (approx.)