Question

Circular cylinder 14 cm long is 88cm square if the volume of the metal used in making the cylinder is 176cm cube find the outer and inner diameter of cylinder

Answer 1

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

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Answer 2

Inner diameter = 3/4 = 0.75 cm and outer diameter = 5/4 = 1.25 cm.

Hope it helps!