Circles Mixed Exercises

area, circumference, diameter and radius

 Area and circumference both relate to the radius and diameter of a circle. Once you know one, you can find all of the others --It just takes a little math!
Practice Exercises

If a circle's diameter is 10, calculate its circumference and area?
  Answer  
A circle's area is 16Π. What is its circumference?
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If a circle has a circumference of 26Π, what is its area?
  Answer