For r > 0, f(r) is the ratio of perimeter to area of a circle of radius r. Then f(1) + f(2) is equal to

For r > 0, f(r) is the ratio of perimeter to area of a circle of radiu

1.	For r > 0, f(r) is the ratio of perimeter to area of a circle of radius r. Then f(1) + f(2) is equal to
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

If f(x) = x and g (x) = |x| then f o g (- 3.5) ?
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