0.25 _ 1/5 i don't know how to show my work

Convert 1/5 to a decimal so we can compare two decimals.

1/5= 20/100= 0.20

Then compare 0.2 vs 0.25
0.2<0.25

Final 0.25>(1/5)

Cd is the perpendicular bisector of both xy and st, and cy=20.find xy