From a circular sheet of paper with a radius of 20cm,four circles of radius 5cm each are cut out.what is the ratio of the uncut to the cut portion?	Pick one:
A) 1:3
B) 4:1
C) 3:1
D) 4:3
E) 2:3
area of uncut=(400-100)3.14   area of cut=4*25*3.14=(100)3.14   ratio=3:1   ANSWER:3:1
<result>C</result>
From a circular sheet of paper with a radius of 20cm,four circles of radius 5cm each are cut out.what is the ratio of the uncut to the cut portion?