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When a pipe has an inner diameter 10 Cm and a wall thickness of 1 Cm find its outer diameter?
Wiki User
∙ 13y ago
First, think about what a diameter of a circle is. It is a line drawn through the middle of a circle from one side to the other. Is a pipe shaped like a circle? Yes, so you can use diameters of a circle to figure this out.
Second, draw a circle like the inside of the pipe. Draw a straight line through the middle from one side to the other. Write 10 cm above it.
Third draw a circle around the first circle. Draw a line to one end if the first line. Write 1 cm above it.
Fourth, do the same on the other end of the first inside line and write 1 cm above it. You should have a line that goes through the middle and all the way to the outside circle.
Now, look at what you have: 1 cm on the outside + 10 cm on the inside + 1 cm again on the other outside. If this seems tricky run your finger along the line to see how it works.
What do you have? 1 cm + 10 cm + 1 cm = 12 cm.
12 cm is the answer.
Wiki User
∙ 13y ago
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