Question

A metallic pipe whose external and internal radii are 8 cm and 6 cm, has a length of 2.1 m.

: •md the curved surface area of the pipe (in m2).​

Answer 1

Answer:

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Answer 2

Answer:

Step-by-step explanation:

Solution:-

The external diameter of the pipe = 8 cm

The internal diameter of the pipe = 6 cm  

External radius = 4 cm and it is denoted as 'R'

Internal diameter = 3 cm and it is denoted as 'r'

Length or height of the pipe = 2.1 m or 210 cm

Volume of the metal = Outer volume of pipe - Inner volume of pipe

= πR²h - πr²h

= (22/7*4²*210) - (22/7*3²*210)

10560 - 5940

Volume of the metal = 4620 cm³

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