In square ABCD, P is the moving point on ad, PE ⊥ AC is in E, PF ⊥ BD is in F, PE + PE = 5, then the circumference of square ABCD is?

In square ABCD, P is the moving point on ad, PE ⊥ AC is in E, PF ⊥ BD is in F, PE + PE = 5, then the circumference of square ABCD is?

Let the intersection of AC and BD be o
ABCD is a square
∴AC⊥BD,∠OAD=∠ODA=45°
∵PE⊥AC
∴PE=AE
∵PF⊥BD
∴PF=BE
∵PF⊥BD,PE⊥AC,AC⊥BD
The peod is a rectangle
∴PE=OF
∵PE+PF=5
∴PE=5
∴AD=5√2
L = 4AD = 20 √ 2