Answer:
4/49
Step-by-step explanation:
7-5 = 2
2/7*2/7 = 4/49
Recall that

There are three cases to consider:
(1) When

, we have

and

, so

(2) When

and

, we get

and

, so

(3) When

, we have

and

, so

So
we just need add x next to ratio and sum them all to get perimeter
9 + x + 2x + 4x = 65
7x = 56
x = 8
well since 8(x)<9<16(2x)<(32(4x), then
the shortest side is 8