Math, asked by alu7, 1 year ago

base surface area of hollow cylinder.????

Answers

Answered by tannu511

$2\pi(r - r)h$

surajsingh01082004: No tannu....

tannu511: Yes suraj

surajsingh01082004: what are the R r u use here

tannu511: R means external radius And r means internal

surajsingh01082004: Still u are wrong...i know what u mean.....let me tell u

tannu511: I m right

surajsingh01082004: No...i will tell u after few secs

surajsingh01082004: who told u that

surajsingh01082004: Tannu.....sorry...but u are wrong

surajsingh01082004: may be correct...but plz see my answer...then u will know

Answered by surajsingh01082004

It is = pie R*R -pie r* r
R= external radius
r= internal radius
Even if the cylinder is hollow, it will have external radius and internal radius,i.e,the cylinder will have thickness

See
https://www.youtube.com/watch?v=e4rouGxjYzA

surajsingh01082004: Happy to help....:)

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