1.	The diameter of a circle is 8. What is the radius?
		A.		B.	16
		C.	4	D.
		Hint
	2.	The diameter of a circle is 7.5. Find the circumference to the nearest tenth.
		A.	47.1	B.	23.6
		C.	16.8	D.	35.4
		Hint
	3.	Find the radius of a circle with circumference .
		A.	8	B.
		C.	4	D.	16
		Hint
	4.	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.	28	D.
		Hint
	5.	In the figure, ABCD is a square and AC = 22. Find the circumference of the circle to the nearest tenth.
		A.	34.6	B.	48.9
		C.	24.4	D.	69.1
		Hint