SOLUTION: A stick is 20 cm long. What is the area of the surface it will describe? a) when it moves parallel of 10 cm? b) when it rotates in a plane about one end?

Question 1144101: A stick is 20 cm long. What is the area of the surface it will describe? a) when it moves parallel of 10 cm? b) when it rotates in a plane about one end?
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
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In case (a) the stick covers the area of a rectangle with dimensions 20 cm and 10 cm.


In case (b) the stick covers the area of a circle with the radius of 20 cm.



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