1) Measure the diameter of a classroom clock face. Calculate the radius and circumference. 2) Measure the circumference of a pool ball. Calculate the diameter and radius. 3) Measure the radius of a kitchen plate. Calculate the diameter and the circumference. 4) Measure the circumference around a coffee mug base. Calculate the diameter and radius. 5) Measure the radius of any circular poster on any of the notice boards around college. Calculate the diameter and circumference. 6) Measure the diameter of the lift button. Calculate the circumference (diameter × 3.14) and radius.

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