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Mathematics 21 Online
OpenStudy (anonymous):

If the outer diameter of a cylindrical oil tank is 54.28 inches and the inner diameter is 48.7 inches, what is the thickness of the wall of the tank, in inches?

OpenStudy (anonymous):

the thickness would just be the outer diameter - the inner diameter

OpenStudy (anonymous):

/2

OpenStudy (anonymous):

oh ok thanks then the answer would be 2.79

OpenStudy (anonymous):

since it goes through the outer layer twice, then yes.

OpenStudy (dumbcow):

you should probably think of it as the (outer radius - inner radius)

OpenStudy (anonymous):

wait so do you divide by 2?

OpenStudy (dumbcow):

yes you are correct

OpenStudy (anonymous):

I'm sorry, you are correct dumbcow outer radius - inner radius

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