Posted by Simon on .
A cylindrical tube is open at both ends.the internal diameter tube 10.4cm and its length is 25cm. If the thickness of the tube 8mm everywhere,find the total surface of area of the tube.

Math 
Steve,
inner diameter is 10.4
outer diameter is 11.2
A = π(25)(10.4+11.2) = 540π 
Math 
Simon,
Bt its ans is 1816.32cm^2

Math 
Simon,
Plz help me

Math 
vibhav dip,
TOTAL SURFACE AREA =
EXTERNAL CURVED SURFACE AREA INTERNAL CURVED SURFACE AREA
in AREA OF BOTH CROSS SECTION
=2¦ÐRh 2¦Ðrh 2¦Ð{R square  r square)