Question

An iron pipe 100cm long has external diameter equal to 16 cm and its thickness is 2cm.find how many cm cube of iron has been used in making tube. if it is open from both end?

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Answer 1

Answer:

A cylindical tube opened at both the ends is made of iron sheet which is 2 cm thick. If the outer diameter is 16 cm and its length is 100 cm, find how many cubic centimetres of iron has been used in making the tube ? Hence, 8800cm3 of iron has been used in making a cylinder tube

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Answer 2

Answer:

8792cm

Step-by-step explanation:

Volume of cylinder =πr

2

hcm

2

Outer radius = 16/2=8 cm

Inner radius = 8−2=6 cm

Volume =π(r

′

2

−r

2

)h, where r' = outer radius and r = inner radius

=π×100×(8

2

−6

2

)=8792cm

3

Hence, 8792cm

3

of iron has been used in making the tube.

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