Posted by **Ayra** on Tuesday, September 12, 2006 at 10:03am.

A pipe has an outer radius of 4 1/2 cm. If the metal is 1/4 cm thick, what is the inner diameter of the pipe?

Please help me!!!

You not you just subtract from the or the wall thickenss, then double it to get the id?

Draw two concentric circles and see if this is so.

Sorry, your wrong. The correct procedure is to subtract only.

## Answer This Question

## Related Questions

- physics - A thick, vertical iron pipe has an inner diameter of 0.070 m. A thin ...
- Physics - A cylindrical aluminum pipe of length 1.52 m has an inner radius of 2....
- 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 copper pipe with an outer radius of 0.010 m runs from an outdoor ...
- Physics - A copper pipe with an outer radius of 0.011 m runs from an outdoor ...
- physics - A piece of pipe has an outer radius of 4.6 cm, an inner radius of 2.8 ...
- heat transfer - a. Steam at 230oC flows through a steel pipe ( = 15/. ) ...
- algebra - A pipe manufacturer makes pipes of four different sizes. The diameter ...
- algebra - A pipe manufacturer makes pipes of four different sizes. The diameter ...

More Related Questions