Help PLEASEE!
Will mark brainliest! (If it lets me)

Answer:
4.
A= S²
A= 13²
A= 169
p= 4s
p= 4× 13
p= 52
5.
A= L×W
A= 21× 5
A= 105
p= 2(L+W)
P= 2(21+5)
P= 2(26)
P= 52
6.
A = L×W
A= 15× 9
A = 135
p=2(L+W)
P= 2( 15 + 9)
P= 2(24)
p = 48
Don't forget to put in the units