Section R.3 Quiz 1.6 
Question: 
What is the area (in square centimeters) of a circle with a diameter of 3 centimeters? Express your answer as a decimal approximation rounded to three decimal places. Do not include the unit of measurement in your answer. 

Variation: 
What is the circumference (in centimeters) of a circle with a radius of 2.1 centimeters? Express your answer as a decimal approximation rounded to three decimal places. Do not include the unit of measurement in your answer. 
