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.