1.	The exact circumference of a circle with a radius of 6 is ____.
		A.		B.
		C.		D.	37.7
		Hint
	2.	Find the radius of a circle with circumference .
		A.		B.	8
		C.	4	D.	16
		Hint
	3.	In the figure below, the diagonals of the square pass through the center of the circle. Find the exact circumference of the circle.
		A.		B.
		C.		D.	28
		Hint
	4.	If the circumference of a circle is 56.5, find the radius to the nearest whole number.
		A.	18	B.	89
		C.	16	D.	9
		Hint
	5.	Find the exact circumference of the circle in the figure.
		A.	17	B.	8.5
		C.	17	D.	4.25
		Hint