Original height = original width = x mm
1. She made an enlarged copy...
height = 2x
width = 2x
2. She cut off a rectangle...
height = 2x
width =

3.She doubled the width...
height = 2x
width =

height * width = area

Original height was
162 mm
C=2pir
first one is r=70
c=2pi70=140pi
2nd one is 49=r
c=2pir
c=2pi49
c=98pi
ratio is
140pi:98pi=10:7
None of
these imposible hope this helps :)