Posted by **Preston** on Wednesday, January 24, 2007 at 6:38pm.

If two sides of a square field were incresed by three feet the area of the field would increase by 129 square feet. find the area of the original field.

If two sides of a square field were incresed by three feet the area of the field would increase by 129 square feet. find the area of the original field.

Let x be the side of the original square field.

Then, (x + 3)^2 - x^2 = 129

x^2 + 6x + 9 - x^2 = 129

6x = 120 making x = 20.

Therefore, the area of the original square is 20^2 == 400 sq. ft.

## Answer this Question

## Related Questions

- math - mr.periwinkle owns a ranch.he wants to add an area in the shape of an ...
- Math - A square field has an area of 22,500 square feet. To the nearest foot, ...
- College Cal 1 - A farmer wants to fence off a rectangular field of area 15000 ...
- geometry - A rectangular field is 64 m X 25 m. Shawn wants to fence a square ...
- Math - Tension wants to build a soccer field for his team. The area of the field...
- math - A farmer wants to fence in three sides of a rectangular field shown below...
- Calculus 1 optimization - A farmer wants to fence an area of 6 million square ...
- math - A rectangular field is to be enclosed on four sides with a fence. Fencing...
- Math - A rectangular field is to be subdivided in 6 equal fields. There is 1200 ...
- math word problem - While finding the amount of seed needed to plant his three ...

More Related Questions