Please can you solve this

Asked by sharma.vipul74 | 14th Mar, 2009, 01:48: PM

Expert Answer:

For a open pipe , formula for total surface area is,A = 2π(r+R)h+π(R2-r2)

So above fomula has to be used in the open pipe case.

Answered by  | 29th Mar, 2009, 06:48: PM

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