## Shaded Area

#### Problem

A square measuring 5 cm by 5 cm is dissected in the following way.

What area is shaded?

#### Solution

The two shaded triangles combine to make a small square which is one-quarter the size of the large square.

So area shaded is | 55 4 | = 6.25 |

Problem ID: 22 (Nov 2000) Difficulty: 1 Star