A 20 metre long iron pipe has an exterior diameter of 25 cm. If the thickness of the pipe is 1 cm find the internal curved surface area of the pipe?
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Answered by
3
here height => 20m =>2000cm
exterior diameter => 25cm and thickness = 1cm
therefore internal diameter => 25-2=> 23cm
therefore radius => 23/2cm
therefore csa=> 2*22/7*23/2*2000
=>144571.4cm2
exterior diameter => 25cm and thickness = 1cm
therefore internal diameter => 25-2=> 23cm
therefore radius => 23/2cm
therefore csa=> 2*22/7*23/2*2000
=>144571.4cm2
Answered by
1
Step-by-step explanation:
height of long iron pipe = 20 m ×100 = 2000 cm
exterior diameter = 25 cm
Thickness = 1 cm
Therefore , interior diameter =23 -2 = 23 cm
Therefore , radius = 23 /2 cm
Therefore , Curved Surface Area ( CSA ) =
2 × 22/ 7 × 23 /2 × 2000
= 144571 .43 cm square .
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