# A Guide to the GRE/Squares

## Squares

The area of a square equals its side squared.

Area = s2

The diagonal of a square equals its side multiplied by ${\displaystyle {\sqrt {2}}}$

This comes from the Pythagorean theorem. The diagonal is the greatest distance between any two points on the square.

### Practice

1. The diagonal of a square is equal to 5. What is the length of a side of the square?

2. Square A has 3 times the size of Square B. If Square B's side has a length of 10, what is the length of a side of Square A?