The difference between outer and inner curved surface area

Asked by admin @ in Math viewed by 374 People

The difference between the outer and inner curved surface areas of a hollow right circular cylinder, 14cm long, is 88cm2. If the volune of meta l used in making the cylinder is 176cm3, find the outer and inner diameters of the cylinder

Answered by admin @


Hey
__________

inner surface area = 2πrh
outer surface area = 2πRh

Outer radius be R
inner radius be r

on equating we will get (R-r)

•volume of the tube can be founded by subtracting external volume by inner volume

and now refer to the attachment

hope helped
_____________________

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