Posted by **Angie** on Thursday, April 30, 2009 at 9:58pm.

The sides of a square are all increased by 3 cm. The area of the new square s 64 cm^2. How can you find the length of a side of the original square?

- Math -
**Walker**, Thursday, April 30, 2009 at 10:04pm
Since the formula for the a\area of a square is "Area=(side)^2", all the sides are equal. So just substitute in.

s^2=64

s=sqrootof64

side=8

8-3=5

so the original side length is 5 cm.

- Math -
**Ms. Sue**, Thursday, April 30, 2009 at 10:05pm
The area of a square is the two sides multiplied together.

Since all sides of a square are the same, you need to find the square root of 64.

When you find that, subtract 3 cm from it to answer your question.

- Math -
**Angie**, Friday, May 1, 2009 at 8:09pm
the ways above is probably easier, but my teacher probably wants me to solve it by factoring..

## Answer this Question

## Related Questions

- math - if the sides of a square are increased by 5 cm the area of the new square...
- mat117/algebra - If the sides of a square are increased by 3 cm, the area is ...
- math - If the sides of a square are lengthened by 8cm, the area becomes 144 cm^2...
- math - The length of a rectangle is 2 times its width and its perimeter is 42 cm...
- math - Each side of a square is lengthened by 8 inches. The area of this new, ...
- MA 107 college algebra - Each side of a square is lengthened by 2 inches. The ...
- algebra - If the sides of a square are increased by 3 meters, the area becomes ...
- Analytic Geometry - A square is a quadrilateral with four equal sides. The area ...
- Algebra - If the sides of a square are increased by 3 cm, its area becomes 100 ...
- math - If the sides of a square are lenthened by 7 cm, the area becomes 121 cm^2...