Question

The tsa of hollow cylinder with no



top formula is

Answer 1

TSA of hollow cylinder=2pie(R^2-r^2)

Answer 2

The TSA will be -

$2\pi( {r}^{2} - {r}^{2} ) + 2\pi \times rh + 2\pi \times rh$

=

$2\pi(r + r) \times (r - r) + 2\pi(r + r)h$

=

$2\pi(r + r) \times (r - r + h)$

where R is outer radius r is inner radius and h is height.

THIS IS A SIMPLE FORMULA AND EASY TO LEARN RATHER THAN WRITING FULL EXPRESSION WRITE THIS . $2\pi(r + r) \times (r - r + h)$

TILL THEN,Cheers

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