Area of a square with side length (s) is:

A = s^2

Given A = 64, we have:

s^2 = 64

Typing this equation into our math engine, we get:

s = 8

Which means the dimensions of the kennel are

**8 x 8**.

How much fencing she used means perimeter. The perimeter P of a square with side length s is:

P = 4s

Given s = 8, we have:

P = 4 * 8

P =

**32**