Answer:
The other dimension of the pasture (width) is
![1.625\ mi](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ex275poxq8cnvh51jstbgjgdwy6al3tsmp.png)
Explanation:
In this problem I assume that the pasture has the shape of a rectangle.
Let
x -----> the length of the pasture
y -----> the width of the pasture
we know that
The area of the pasture (rectangle) is equal to
![A=xy](https://img.qammunity.org/2020/formulas/mathematics/middle-school/92fnf84e6el1b8awjzmjadlyo48pjjzxuy.png)
we have
![A=0.65\ mi^(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/g6yxa8byxv79d5mr4cexjfynv49t8odsod.png)
![x=0.4\ mi](https://img.qammunity.org/2020/formulas/mathematics/middle-school/4kw22fv0haxlbg6rds58j39nqtpg8xbf5y.png)
substitute and solve for y
![0.65=0.4y](https://img.qammunity.org/2020/formulas/mathematics/middle-school/26ugqh6iqugmsod1gw0seeso4vi92mtmxy.png)
![y=0.65/0.4](https://img.qammunity.org/2020/formulas/mathematics/middle-school/bmjfzzq2e27z2kzwa8mhqocs222s3lv8ll.png)
![y=1.625\ mi](https://img.qammunity.org/2020/formulas/mathematics/middle-school/a59rh9p723vyiubv87969vkg4gmbi1ib1j.png)