Posted by **James** on Friday, March 25, 2011 at 2:44am.

A hollow steel tube, 4 m long, has walls 5 mm thick and is open at each end. if the outer diameter is 41 cm, what's the inner diameter?

- math -
**Jai**, Friday, March 25, 2011 at 6:46am
first convert 5 mm to cm

recall that 10 mm = 1 cm

thus 5 mm = 1/2 cm = 0.5 cm

then we subtract the thickness by the outer diameter:

41 - 2*0.5

41 - 1 = 40 cm

hope this helps~ :)

- math -
**James**, Monday, March 28, 2011 at 12:55am
thanks, it helped a lot

- math -
**Ari**, Friday, June 17, 2011 at 7:26am
Work out area and diameter and volume if circumference is 16cm and height 2cm

## Answer this Question

## Related Questions

- math - A steel tube has an outside diameter of 15 cm, an inside diameter of 13 ...
- Physics - A figure shows a section of a long tube that narrows near its open end...
- math - a cross section of a hollow circular pipe shows that its inner diameter ...
- math - A cross section of a hollow circular pipe shows that its inner diameter ...
- physics - A thick, vertical iron pipe has an inner diameter of 0.070 m. A thin ...
- Math (Area of Shapes) - Suppose that the spool is 1m long and has an inner ...
- Physics - A hollow spherical iron shell floats almost completely when submerged ...
- University Physics - A hollow copper wire with an inner diameter of 0.60mm and ...
- physics - a hollow spherical iron shell floats just completely submerged in ...
- Physics - When standing erect a person's weight is supported chiefly by the ...

More Related Questions