Question 660943
p = 2(l+w) = 64
l = 8 + w
2l + 2w = 64
2(8+w) + 2w = 64
16 + 2w + 2w = 64
4w = 64-16
4w = 48
w =12
l = 12+8=20

Proof
2(12+20)=2(32)=64
P=64