A miniature portrait of George Washington is square and has an area of 169 square centimetres. How long is each side of the portrait? *

side^2 = 169

side = √169 = ...

To find the length of each side of the square portrait, we can calculate the square root of its area.

The given area of the square portrait is 169 square centimeters.

To calculate the square root of 169, we can use a calculator or do it manually.

Manually, we can identify the perfect square that results in 169. In this case, it is 13 (13 * 13 = 169).

So, each side of the square portrait is 13 centimeters long.