We have two different flags
Mrs Parkers
School flag= 4.2(Mrs. Parker)
Let's see with an example
Imagine the dimension of the Mrs Parker are
Mrs Parkers Flag
Length=3
Width=2
P=(2*2)+(2*3)=10
A=2*3=6
School Flag
Length=3*4.2=12.6
Width=2*4.2=8.4
P=(2*12.6)+(2*8.4)=42
A=(8.4*12.6)=105.84
With this information, we can answer what is true
A is true
4.2/10=4.2
P=