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plz use feet and foot in a sentence and tell whats the different !
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I wouldn't touch that with a ten-foot pole!

I have a sixteen-foot ladder on top of my car.

The length of my ladder is sixteen feet.

Comments  
Generally, the difference between these two is that feet is the plural for foot.
E.G.

I hurt my foot while I was walking on the beach yesterday. I had it bandaged.
Your feet are really cold. Put them into the foot bath, so that you could get warm.
 Avangi's reply was promoted to an answer.