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.	8	B.
		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.	28	B.
		C.		D.
		Hint
	4.	Refer to circles B and D in the figure below. If BC = 5 and CD = 5, find AE.
		A.	20	B.	25
		C.	15	D.	10
		Hint
	5.	If the circumference of a circle is 56.5, find the radius to the nearest whole number.
		A.	89	B.	16
		C.	9	D.	18
		Hint