Math
posted by Simon .
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.

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

Plz help me

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)
Respond to this Question
Similar Questions

maths
the thickness of a metallic tube is 1 cm and the inner diameter of tube is 12 cm . Find the weight of 1 meter tube long, if the density of metal be 7.8 gram/cm^3 
maths
the thickness of a metallic tube is 1 cm and the inner diameter of tube is 12 cm . Find the weight of 1 meter tube long, if the density of metal be 7.8 gram/cm^3 
Physics, URGENT!!!
We consider tobacco virus diffusing along a 0.47 m long tube filled with water. The crosssectional area of the tube is unknown. The diffusion coefficient is found in Table 10.5, p. 319 in the textbook. A total amount of virus of 2.6 … 
HELLLLP Math
A steel tube, which is closed at both ends, is filled with air. The air in the tube is vibrating at a frequency of 200·Hz. Use 340·m/s for the speed of sound in air. If the 200·Hz vibration respresents the fundamental standing wave … 
Physics
An open tube of length L = 1.60 m and crosssectional area A = 4.60 cm2 is fixed to the top of a cylindrical barrel of diameter D = 1.27 m and height H = 2.16 m. The barrel and tube are filled with water (to the top of the tube). Calculate … 
physics
A cylindrical tube open at both ends is made of metal. The internal diameter of the tube is 11.2 cm and its length is 21 cm. The metal every where is 0.4 cm thick. Calculate the volume of the metal correct to 1 place of decimal 
physics
A cylindrical tube open at both ends is made of metal. The internal diameter of the tube is 11.2 cm and its length is 21 cm. The metal every where is 0.4 cm thick. Calculate the volume of the metal correct to 1 place of decimal 
Heat Transfer
A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C … 
Heat Transfer
A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C … 
Mathematics
A cylindrical tube, open at both ends, is made of metal. The internal diameter of the tube is 10.4cm and its height is 25 cm. If thickness of the metal is 8mm everywhere, calculatd the volume of metal in the cylinder