Question

A
cylindrical tube open at both ends is made
of metal The internal diamefer of the tube
11:2 cm and
melcal thicknes
its length is 21cm. The
is o. 4 cm. Calculate the volume
of the metal.​

Answer 1

Answer:

Volume 25

Step-by-step explanation:

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Answer 2

306.2cm

Step-by-step explanation:

Internal diameter = 11.2cm

Internal radius = 11.2/2=5.6cm

Length o= 21cm

Volume of internal cylinder =πr

2

h

=22×5.6×5.6×

7

21

=2069.76cm

2

External radius = R=(5.6+0.4)

Volume of external cylinder = πR

2

h

22×6×6×

7

21

2376cm

2

volume of metal = volume of external diameter

volume of internal diameter

(2376−2069.76)

306.24cm

3

306.2cm

3